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整数简便运算专项练习600题(有答案)
(1)25×125×4×8,
(2)2005×2004÷4,
(3)55×66÷(11×11),
(4) 25×(19+19+19+19),
(5)99×99+99,
(6)37×39﹣29×37,
(7)18÷27÷6×27,
(8)586×124+29×586﹣586×53,
(9)
28×5+2×4×35+21×20+14×40+8×62,
(10)125×32,
(11)2008×99+2008,
(12)77﹣75+23﹣25,
(13)125×88,
(14)2011×99+2011,
(15)49﹣75+151﹣25,
(16)(125+9)×8,
(17)3.67×25×4,
(18)28+53l+72+469,
(19)49×102﹣2×49,
(20)833﹣243﹣457,
(21)41000÷(41×5),
(22)4200÷25,
(23)280×36﹣360×18,
(24)5400÷(50×27),
(25)45×45+45×55
(26)37×41﹣37
(27)162+89﹣62
(28)71×25+71×76,
(29)125×32×25,
(30)398+167+102+333,
(31)1400﹣386﹣614,
(32)794﹣198,
(33)68×25,
(34)6756﹣193﹣207,
(35)72×125,
(36)97×360+3×360,
(37)44×25,
(38)1000﹣525+125,
(39)402﹣27+198,
(40)39+261+61,
(41)2010×9+2010,
(42)257﹣65+43+165,
(43)32×25×125,
(44)384+196+216+104,
(45)8×(125+25)×4,
(46)78×57﹣78+78×43,
(47)(6+8)×125
(48)726+53+74﹣353
(49)735﹣248﹣152
(50)4500÷4÷25
(51)32×27+73×32,
(52)1260﹣432﹣568,
(53)25×62×4,
(54)125×88,
(55)17×243+17×56+17,
(56)25×32×125,
(57)125×32×25,
(58)132×77+22×132+132,
(59)1139﹣(350+139),
(60)1170÷9÷13,
(61)98+376+2,
(62)25×97×4,
(63)137×38+63×38,
(64)300÷25÷4,
(65)125×(80+8),
(57)872﹣354﹣246,
(57)25×64×4,
(58)72×102﹣2×72,
(59)1002﹣5+98,
(60)569+68+132+31,
(61)38×25×4,
(62)2300﹣165﹣35,
(63)125×(8+4),
(64)3200÷25÷4,
(65)23×32+68×23,
(66)25×204,
(67)56×32﹣46×32,
(68)8+2﹣8+2,
(69)25×4÷25×4,
(70)726﹣(526﹣150),
(71)286+198,
(72)314﹣202,
(73)526+301,
(74)223﹣99,
(75)98×58+58+58,
(76)415﹣176﹣24,
(77)829+37+71+63,
(78)125×89×8,
(79)428×78+572×78,
(80)101×92﹣92,
(81)907×99+907,
(82)274+299+201+326,
(83)65×99+65,
(84)38×42+38×58
(85)415﹣176﹣24,
(86)829+37+71+63,
(87)125×89×8,
(88)428×78+572×78,
(89)250+255+260+265+270,
(90)1041﹣(41+328),
(91)125×54﹣46×125,
(92)99+99×99,
(93)329﹣186﹣14,
(94)25×37×4,
(95)720÷16÷5,
(96)403﹣198﹣2,
(97)76+149+24,
(98)154﹣(54+98),
(99)37×64+37×136,
(100)216+305,
(101)25×32,
(102)47+236+64,
(103)6×(15×9),
(104)402+539,
(105)43+78+122+257,
(106)25×(26×4),
(107)25×44,
(108)354+(229+46),
(109)(125+7)×8,
(110)327+64+273+46,
(111)645﹣58﹣142,
(112)332×4+68×4,
(113)135﹣87+65﹣13,
(114)15×4×25,
(115)1992+144﹣992,
(116)78×101,
(117)69+11﹣69+11,
(118)25×64×125
(119)107×73﹣7×73
(120)39×101,
(121)75×299+75,
(122)720÷16÷5,
(123)456+328+672+44,
(124)57×101,
(125)87×99+87,
(126)84×72+84×29+84,
(127)6240﹣3885﹣1115,
(128)25×13×4,
(129)99×36+36,
(130)351+188+12,
(131)88×125,
(132)720÷16÷5,
(133)317×15﹣17×15,
(134)(125+7)×8,
(135)3200÷25÷4,
(136)327+64+273+46,
(137)639﹣58﹣142,
(138)25×137×40,
(139)4200﹣1934﹣1066,
(140)290×54+29×460,
(141)46×102+308,
(142)25×137×4,
(143)38×101,
(144)68×200×25,
(145)101×87﹣87,
(146)56×67+33×56,
(147)9+498+102+211,
(148)1305+1238﹣405,
(149)2452﹣(75+452),
(150)245﹣65﹣35,
(151)186+82+18,
(152)25×(4×97),
(153)8×(25+20),
(154)24×56+44×24,
(155)700÷4÷25,
(156)39×49+39×51,
(157)108×25,
(158)25×125×2×4,
(159)56×99+56,
(160)
124×75﹣124×72﹣124×2,
(161)104×39﹣39×4,
(162)28×99+28
(163)(125×39)×8
(164)6958+1998,
(165)(81+108)÷27,
(166)3254﹣599﹣254,
(167)26×8×125,
(168)4200÷15÷2,
(169)25×33×4,
(170)25×29×4,
(171)598×101,
(172)125×48,
(173)105×32,
(174)4×43×25,
(175)109+127+73,
(176)608﹣154﹣146,
(177)165﹣97,
(178)258+98,
(179)109+127+73,
(180)608﹣154﹣146,
(181)165﹣97,
(182)258+98,
(183)36×64﹣64+64×65,
(184)24×125×7,
(185)25×(24+8)×125,
(186)438﹣298,
(187)25×37×8,
(188)4800÷16÷5,
(189)816﹣285﹣15,
(190)37×101﹣37,
(191)2563﹣79+437,
(192)768﹣273﹣27
(193)165+247+135
(194)198+355
(195)243﹣(43+26)
(196)45+63+37+55,
(197)520﹣425﹣75,
(198)8×(11×125),
(199)525×99+525,
(200)3900÷25÷4,
(201)275+364+636+725,
(202)1578﹣(61+578)﹣139,
(203)9999×2010+2010
(204)456+123+544+877
(205)225×48+775×48
(206)25×33×4×2,
(207)156+62﹣156+62,
(208)700﹣296﹣104,
(209)45+99×99+54,
(210)8×4×(125+25),
(211)25×(4×40),
(212)47×16+63×16,
(213)201×42﹣42,
(214)6854﹣(893+854+107),
(215)28×19×25,
(216)327×99,
(217)54000÷8÷125,
(218)194+59+41+106,
(219)383﹣(183+29),
(220)24×125,
(221)156+45﹣55,
(222)1300÷25÷4,
(223)5127﹣866﹣134,
(224)75+127+25+63,
(225)363×7+237×7,
(226)4300÷25÷4,
(227)25×7×44,
(228)327+64+273+46,
(229)750﹣326﹣144,
(230)278+598+122,
(231)647﹣289﹣111,
(232)287+198,
(233)357+256+1000,
(234)49×102﹣2×49,
(235)1563+254+437+746,
(236)25×64×125,
(237)43000÷(43×5),
(238)1736÷28+1064÷28,
(239)168×25×4,
(240)32×87+13×32,
(241)1126﹣637﹣463,
(241)(101﹣98)×44÷12,
(242)43×99+43
(243)1270﹣538﹣462
(244)577+492+423+508
(245)48×125
(246)32000÷125
(247)107+538+462
(248)54×45+45+45×45
(249)125×(25×32 )
(250) 153×43﹢43×47,
(251)101×16,
(252)125×5×8×2,
(253)39+144+61,
(254)27×4×5,
(255)857﹣318﹣182,
(256)25×77﹣37×25,
(257)125×7×32,
(258)124+38+76+62,
(259)222﹣56﹣44,
(260)16×125,
(261)534+262+66+138,
(262)99×165+165,
(263)29×8×125,
(264)8×(125+12),
(265)1428﹣544﹣456,
(266)250×60,
(267)630÷35÷2,
(268)125×16,
(269)800÷32,
(270)25×36,
(271)810÷54,
(272)55×14,
(273)179+54+321,
(274)13×14×125×2,
(275)1525﹣31+75﹣49,
(276)115×23﹣23×15,
(277)23×199+23,
(278)72×5+72×4+72,
(279)34×72+34×28,
(280)203×99,
(281)(80+4)×25,
(282)125×7×8,
(283)27×45+55×27,
(284)728﹣155﹣328,
(285)463+342+158,
(286)873﹣322+278,
(287)1234﹣773﹣327,
(288)111×9+111,
(289)25×294×4,
(290)4000÷125÷8,
(291)18×45+18×55,
(292)239+144+61
(293)728﹣155﹣328,
(294)463+342+158,
(295)873﹣322+278,
(296)1234﹣773﹣327,
(297)111×9+111,
(298)24×125,
(299)114+48+86+52,
(300)469×5×2,
(301)720÷15÷4,
(302)3288﹣1999+212,
(303)769×101﹣769,
(304)39000÷60÷50,
(305)96×125×7×24,
(306)1795+376+624﹣595,
(307)102×79﹣79×2,
(308)25×404,
(309)628﹣46+454,
(310)(80﹣1)×125,
(311)(49+49+49+49)×250,
(312)45×54+45×45+45,
(313)324+67+76,
(314)34×27+66×27,
(315)99×52+52,
(316)(125+9)×8,
(317)3.27+6.4+2.73+4.6,
(318)3200÷25÷4,
(319)137×13+137×6+137,
(320)450×34+45×660
(321)827﹣98﹣102,
(322)378+169+22,
(323)475﹣197,
(324)188+97+12,
(325)235+36+45,
(326)372+89+38,
(327)464+28+36,
(328)597+24+3,
(329)682﹣55﹣27,
(330)725×23×4,
(331)8125×16,
(333)932×25×25,
(334)325+325+325+324,
(335)125×24,
(336)1200÷25,
(337)908×11﹣908,
(338)329×99+329,
(339)12150÷45﹣7650÷45,
(340)27+979+1973+9021,
(341)1358-(442+358)+622,
(342)25×58+25+25×41,
(343)101×15+358,
(344)104×45÷52,
(345)25×(40×6),
(346)532×76÷38,
(347)173×8÷173×8,
(348)28×25+375÷25,
(349)4260÷60×104,
(350)796×3+584,
(351)25×319×4,
(352)99×52,
(353)250×28,
(354)630÷35÷2,
(355)52×72+52×29﹣52,
(356)243+26+274,
(357)35.24﹣(15.24+8.16),
(358)354﹣99,
(359)83×5+83×2+83×3,
(360)43×202,
(361)185×38+15×38,
(362)160×25,
(363)420÷[(205﹣198)×4],
(364)96×101﹣96,
(365)2000﹣586﹣114,
(366)55×25+25×45,
(367)(40+4)×25,
(368)540÷12÷5,
(369)77×13﹣13×27,
(370)104×32,
(371)282+142+158,
(372)577+204,
(373)45×14,
(374)78×99,
(375)542﹣199+99,
(376)65+99×65,
(377)470÷(5×47),
(378)1621﹣(312+621)﹣688,
(379)1185+1733+115+3267,
(380)101×99,
(381)4920÷24+3250÷125,
(382)24×57+43×24,
(383)36+42+64+158,
(384)1600﹣217﹣483,
(385)163×8+137×8,
(386)4200÷25÷4,
(387)100﹣28+72,
(388)200﹣28×5,
(389)297﹣28﹣72,
(390)4×89×25,
(391)78+99+22,
(392)900÷25÷4,
(393)329×101,
(394)54×98+46×98,
(395)3000÷125,
(396)800÷25,
(397)(125×25)×8,
(398)57×15+42×15+15,
(399)373+733+627,
(400)623﹣187﹣213+377,
(401)98+99×98,
(402)102×36,
(403)276+428+124+572,
(404)375÷(25﹣10)×15,
(405)125×43﹣25×43,
(406)32×202,
(407)285×38+15×38,
(408)120×25,
(409)490÷[(215﹣208)×4],
(410)95×101﹣95,
(411)7614﹣(2164+871),
(412)578+(791+422)+309,
(413)24×125×7,
(414)536×64﹣64-64×35,
(415)25×99×4,
(416)121+131+141+151+161+171+181,
(417)(80﹣1)×125,
(418)45×54+45×45+45,
(419)(543+543+543+543)×25,
(420)2300﹣165﹣35,
(421)25×204,
(422)125×(8+4),
(423)3700÷25÷4,
(424)56×32﹣46×32,
(425)99×78+78,
(426)125×103﹣125×3,
(427)2700﹣425﹣175,
(428)125×88,
(429)41+127+59+173,
(430)1300÷25÷4,
(431)156×l0l﹣156,
(432)25×71×4,
(433)135×99,
(434)49×99+49,
(435)5620÷(562×5),
(436)37+125+63+175,
(437)285+195+105+415,
(438)643﹣48﹣12﹣40,
(439)25×32,
(440)8×48×125,
(441)5400÷45÷2,
(442)360÷45,
(443)148×8+152×8,
(444)99×34,
(445)25×201﹣25,
(446)1268+227+473+132,
(447)202×12-24,
(448)789﹣511﹣89,
(449)735﹣238﹣162,
(450)356+83+144,
(451)53×99,
(452)199×39+39,
(453)7826﹣(826﹣1300),
(454)87×99+87,
(455)125×88,
(456)54×102,
(457)125×(4+8),
(458)36×111+888×8,
(459)65×34+34×34+34,
(460)25×13×4,
(461)567+142+558,
(462)546﹣378﹣162,
(463)1458+999,
(464)796+643﹣596,
(465)475﹣303,
(466)265+318+35,
(467)25×387×4,
(468)264+(37+136)+163,
(469)76×102,
(470)56×38+38+43×38,
(471)2358+998,
(472)5927﹣(458+627),
(473)3752﹣698,
(474)2000﹣586﹣114
(475)67×101﹣67
(476)125×48
(477)34×126+37×73+37
(478)85+137+63+215,
(479)885﹣(301﹣115),
(480)40×(25+125),
(481)99×123,
(482)64×125,
(483)79999+7999+799+79,
(484)630÷45,
(485)168×68+33×168﹣168,
(486)126×72,
(487)875+659+125
(488)813﹣256﹣344
(489)77+649﹣649
(490)99×7+7
(491)459×802+197×459+459,
(492)125×(8×2)+100,
(493)230×24+240×77,
(494)46×101﹣146,
(495)(841﹣41)÷25×4,
(496)135+39+55+61,
(497)45×201,
(498)2000÷25÷8,
(499)17×43﹣43×7,
(500)278﹣122﹣78,
(501)2000÷125÷8,
(502)800﹣138﹣162,
(503)99×38+38,
(504)25×33×4,
(505)(125+70)×8,
(506)101×87,
(507)312×4+188×4,
(508)28×225﹣2×225﹣6×225,
(509)389+327+211
(510)608﹣154﹣146
(511)587﹣98
(512)125×53×80,
(513)150+(140×8﹣252),
(514)178×78﹣78×78,
(515)771﹣169+229﹣431,
(516)25×19×4,
(517)(25×125)×(8×40),
(518)125×8×8,
(519)35×39+65×39,
(520)45×(200+2),
(521)125×32,
(522)195×115﹣195×15,
(523)25+75﹣25+75,
(524)99×38+38,
(525)3200÷4÷25,
(526)273﹣73﹣27,
(527)538﹣(461+38),
(528)125×48,
(529)1300÷25÷4,
(530)237﹣125+163﹣175,
(531)156×l0l﹣156,
(532)78×103,
(533)25×36×11,
(534)14×37+63×14,
(535)(25+125 )×8,
(536)5×4×20×25,
(537)168﹣52﹣48,
(538)1300÷25÷4,
(539)37+125+63+175,
(540)28×37+73×37﹣37,
(541)(300﹣1456÷26)×32,
(542)8×(29×l25),
(543)99×l0l,
(544)27×48+27×52,
(545)125×25×4×8,
(546)125×(296×80),
(547)33×33+99×89,
(548)560÷7÷8,
(549)88×201﹣88,
(550)36×7÷36×7,
(551)1300÷25÷4,
(552)32×(25×l25),
(553)32+155+68+145,
(554)201×16,
(555)125×103﹣125×3,
(556)2700﹣425﹣175,
(557)125×44,
(558)41+127+59+173,
(559)2300÷25÷4,
(560)156×l0l﹣156,
(561)49×99+49,
(562)5787﹣329﹣1071,
(563)52×11+11×18,
(564)912+88﹣512,
(565)376+28+172+124,
(566)43000÷8÷125,
(567)99×38+38,
(568)25×104,
(569)8×(29×l25),
(570)688-534+112-166,
(571)156×l0l-156,
(572)164-83-17,
(573)26×148-48×26,
(573)600÷25÷4,
(574)83×29+71×83,
(575)199+199×99,
(576)560÷(56÷9),
(577)101×99,
(578)28×37+73×37-37,
(579)7820-375-625,
(580)25×33×4,
(581)329+753+571+47,
(582)75+47×3, (583)2500÷4÷25,
(16+24)×35÷70,
(585)875+209+191-75, (586)57×43+33×43,
(587)25×103-125×3,
(588)2700-425-175,
(589)1200÷25÷4,
(590)41+127+59+173, (591)156×83+156×17,
(592)25×73×4,
(593)745-179-21,
(594)125×66×8,
(595)7200÷45÷2,
(596)1600-704-275-225-296,
(597)27+979+1973+9021,
(598)3291+599-898,
(599)833-243-457,
(600)199×47+47,
参考答案:
(1)25×125×4×8,
=(25×4)×(125×8),
=100×1000,
=100000.
(2)2005×2004÷4,
=2005×(2004÷4),
=2005×501,
=2005×500+2005,
=1002500+2005,
=1004505.
(3)55×66÷(11×11),
=55×66÷11÷11,
=(55÷11)×(66÷11),
=5×6,
=30;
(4) 25×(19+19+19+19),
=25×(19×4),
=25×4×19,
=10×19,
=190
(5)99×99+99,
=99×(99+1),
=99×100,
=9900;
(6)37×39﹣29×37,
=37×(39﹣29),
=37×10,
=370;
(7)18÷27÷6×27,
=18÷6×(27÷27)
=3×1,
=3;
(8)586×124+29×586﹣586×53,
=(124+29﹣53)×586,
=100×586,
=58600;
(9)28×5+2×4×35+21×20+14×40+8×62,
=28×5+2×4×7×5+3×7×4×5+14×2×20+8×62,
=28×5+28×10+28×15+28×20+8×62,
=28×(5+10+15+20)+8×62,
=28×50+8×62,
=1400+496,
=1896;
(10)125×32,
=125×(8×4),
=125×8×4,
=1000×4,
=4000;
(11)2008×99+2008,
=2008×(99+1),
=2008×100,
=200800;
(12)77﹣75+23﹣25,
=(77+23)﹣(75+25),
=100﹣100,
=0;
(13)125×88,
=125×(8×11),
=125×8×11,
=1000×11,
=11000;
(14)2011×99+2011,
=2011×(99+1),
=2011×100,
=201100;
(15)49﹣75+151﹣25,
=(49+151)﹣(75+25),
=200﹣100,
=100;
(16)(125+9)×8,
=125×8+9×8,
=1000+72,
=1072;
(17)3.67×25×4,
=3.67×(25×4),
=367×100,
=36700;
(18)28+53l+72+469,
=(28+72)+(53l+469),
=100+1000,
=1100;
(19)49×102﹣2×49,
=49×(102﹣2),
=49×100,
=4900;
(20)833﹣243﹣457,
=833﹣(243+457),
=833﹣700,
=133;
(21)41000÷(41×5),
=(41000÷41)÷5,
=1000÷5,
=200;
(22)4200÷25,
=4200÷(5×5),
=4200÷5÷5,
=840÷5,
=168;
(23)280×36﹣360×18,
=280×36﹣36×180,
=(280﹣180)×36,
=100×36,
=3600;
(24)5400÷(50×27),
=5400÷50÷27,
=5400÷27÷50,
=200÷50,
=4;
(25)45×45+45×55
=(45+55)×45,
=100×45,
=4500;
(26)37×41﹣37
=(41﹣1)×37,
=40×37,
=1480;
(27)162+89﹣62
=162﹣62+89,
=189
(28)71×25+71×76,
=71×(25+76),
=71×101,
=71×(100+1),
=71×100+71×1,
=7100+71,
=7171;
(29)125×32×25,
=(125×8)×(4×25),
=1000×100,
=100000;
(30)398+167+102+333,
=(398+102)+(167+333),
=500+500,
=1000;
(31)1400﹣386﹣614,
=1400﹣(386+614),
=1400﹣1000,
=400.
(32)794﹣198,
=794﹣200+2,
=594+2,
=596;
(33)68×25,
=17×4×25,
=17×(4×25),
=17×100,
=1700;
(34)6756﹣193﹣207,
=6756﹣(193+207),
=6756﹣400,
=6356;
(35)72×125,
=9×8×125,
=9×(8×125),
=9×1000,
=9000;
(36)97×360+3×360,
=360×(97+3),
=360×100,
=36000
(37)44×25,
=(11×4)×25,
=11×(4×25),
=11×100,
=1100;
(38)1000﹣525+125,
=1000﹣(525-125),
=600
(39)402﹣27+198,
=(402+198)-27
=600-27
=573
(40)39+261+61,
=39+61+261,
=100+261,
=361;
(41)2010×9+2010,
=2010×(9+1),
=2010×10,
=20100;
(42)257﹣65+43+165,
=(257+43)+(165﹣65),
=300+100,
=400;
(43)32×25×125,
=8×4×25×125,
=(4×25)×(125×8),
=100×1000,
=100000;
(44)384+196+216+104,
=(384+216)+(196+104),
=600+300,
=900;
(45)8×(125+25)×4,
=125×8×4+25×4×8,
=4000+800,
=4800;
(46)78×57﹣78+78×43,
=78×(57+43﹣1),
=78×(100﹣1)
=78×100﹣78×1,
=7800﹣78,
=7722;
(47)(6+8)×125
=6×125+8×125,
=750+1000.
=1750;
(48)726+53+74﹣353
=726+74+53﹣353,
=800-(353-53),
=800-300
=500;
(49)735﹣248﹣152
=735﹣(248+152),
=735﹣400,
=335;
(50)4500÷4÷25
=4500÷(4×25),
=4500÷100,
=45.
(51)32×27+73×32,
=(27+73)×32,
=100×32,
=3200;
(52)1260﹣432﹣568,
=1260﹣(432+568),
=1260﹣1000,
=260
(53)25×62×4,
=(25×4)×62,
=100×62,
=6200;
(54)125×88,
=125×8×11,
=1000×11,
=11000.
(55)17×243+17×56+17,
=17×(243+56+1),
=17×300,
=5100.
(56)25×32×125,
=25×(4×8)×125,
=(25×4)×(125×8),
=100×1000,
=100000;
(57)125×32×25,
=125×8×4×25,
=(125×8)×(4×25),
=1000×100,
=100000;
(58)132×77+22×132+132,
=132×(77+22+1),
=132×100,
=13200;
(59)1139﹣(350+139),
=1139﹣350﹣139,
=1139﹣139﹣350,
=1000﹣350,
=650;
(60)1170÷9÷13,
=1170÷(9×13),
=1170÷117,
=10
(61)98+376+2,
=(98+2)+376,
=100+376,
=476;
(62)25×97×4,
=(25×4)×97,
=100×97,
=9700;
(63)137×38+63×38,
=(137+63)×38,
=200×38,
=7600;
(64)300÷25÷4,
=300÷(25×4),
=300÷100,
=3;
(65)125×(80+8),
=125×80+125×8,
=10000+1000,
=11000;
(57)872﹣354﹣246,
=872﹣(354+246),
=872﹣600,
=272;
(57)25×64×4,
=25×4×64,
=100×64,
=6400;
(58)72×102﹣2×72,
=72×(102﹣2),
=72×100,
=7200;
(59)1002﹣5+98,
=1002+98﹣5,
=1100﹣5,
=1095.
(60)569+68+132+31,
=(569+31)+(68+132),
=600+200,
=800;
(61)38×25×4,
=38×(25×4),
=38×100,
=3800;
(62)2300﹣165﹣35,
=2300﹣(165+35),
=2300﹣200,
=2100;
(63)125×(8+4),
=125×8+125×4,
=1000+500,
=1500;
(64)3200÷25÷4,
=3200÷(25×4),
=3200÷100,
=32;
(65)23×32+68×23,
=23×(32+68),
=23×100,
=2300;
(66)25×204,
=25×(200+4),
=25×200+25×4,
=5000+100,
=5100;
(67)56×32﹣46×32,
=(56﹣46)×32,
=10×32,
=320.
(68)8+2﹣8+2,
=10﹣8+2,
=2+2,
=4;
(69)25×4÷25×4,
=100÷25×4,
=4×4,
=16;
(70)726﹣(526﹣150),
=726﹣526+150,
=200+150,
=350;
(71)286+198,
=286+200﹣2,
=486﹣2,
=484;
(72)314﹣202,
=314﹣200﹣2,
=114﹣2,
=112;
(73)526+301,
=526+300+1,
=826+1,
=827;
(74)223﹣99,
=223﹣100+1,
=123+1,
=124;
(75)98×58+58+58,
=(98+1+1)×58,
=100×58,
=5800.
(76)415﹣176﹣24,
=415﹣(176+24),
=415﹣200,
=215;
(77)829+37+71+63,
=(829+71)+(63+37),
=900+100,
=1000;
(78)125×89×8,
=125×8×89,
=1000×89,
=89000;
(79)428×78+572×78,
=(428+572)×78,
=1000×78,
=78000
(80)101×92﹣92,
=(101﹣1)×92,
=100×92,
=9200;
(81)907×99+907,
=(99+1)×907,
=100×907,
=90700;
(82)274+299+201+326,
=(274+326)+(299+201),
=600+500,
=1100;
(83)65×99+65,
=(99+1)×65,
=100×65,
=6500;
(84)38×42+38×58
=(42+58)×38,
=100×38,
=3800;
(85)415﹣176﹣24,
=415﹣(176+24),
=415﹣200,
=215;
(86)829+37+71+63,
=(829+71)+(37+63),
=900+100,
=1000;
(87)125×89×8,
=125×8×89,
=1000×89,
=89000;
(88)428×78+572×78,
=(428+572)×78,
=1000×78,
=78000.
(89)250+255+260+265+270,
=250+(255+265)+(260+270),
=250+520+530,
=1300.
(90)1041﹣(41+328),
=1041﹣41﹣328,
=1000﹣328,
=672;
(91)125×54﹣46×125,
=125×(54﹣46),
=125×8,
=1000;
(92)99+99×99,
=99×(1+99),
=99×100,
=9900
(93)329﹣186﹣14,
=329﹣(186+14),
=329﹣200,
=129;
(94)25×37×4,
=(25×4)×37,
=100×37,
=3700;
(95)720÷16÷5,
=720÷(16×5),
=720÷80,
=9.
(96)403﹣198﹣2,
=403﹣(198+2),
=403﹣200,
=203;
(97)76+149+24,
=(76+24)+149,
=100+149,
=249;
(98)154﹣(54+98),
=154﹣54﹣98,
=(154﹣54)﹣98,
=100﹣98,
=2.
(99)37×64+37×136,
=37×(64+136),
=37×200,
=7400;
(100)216+305,
=200+16+300+5,
=200+300+16+5,
=500+21,
=521;
(101)25×32,
=25×4×8,
=800;
(102)47+236+64,
=47+(64+236),
=47+300,
=347;
(103)6×(15×9),
=6×15×9,
=90×9,
=810;
(104)402+539,
=400+(2+539),
=400+541,
=941;
(105)43+78+122+257,
=(43+257)+(78+122),
=300+200,
=500;
(106)25×(26×4),
=25×4×26,
=100×26,
=2600;
(107)25×44,
=25×4×11,
=100×11,
=1100;
(108)354+(229+46),
=354+46+229,
=400+229,
=629
(109)(125+7)×8,
=125×8+7×8,
=1000+56,
=1056;
(110)327+64+273+46,
=(327+273)+(64+46),
=600+110,
=710;
(111)645﹣58﹣142,
=645﹣(58+142),
=645﹣200,
=445;
(112)332×4+68×4,
=(332+68)×4,
=400×4,
=1600;
(113)135﹣87+65﹣13,
=(135+65)﹣(87+13),
=200﹣100,
=100;
(114)15×4×25,
=15×(4×25),
=15×100,
=1500;
(115)1992+144﹣992,
=(1992﹣992)+144,
=1000+144,
=1144;
(116)78×101,
=78×100+78×1,
=7878;
(117)69+11﹣69+11,
=(69﹣69)+(11+11),
=0+22,
=22.
(118)25×64×125
=25×4×2×8×125;
=(25×4)×2×(8×125),
=100×2×1000,
=200000;
(119)107×73﹣7×73
=(107﹣7)×73,
=100×73,
=7300
(120)39×101,
=39×(100+1),
=39×100+39,
=3939;
(121)75×299+75,
=75×(299+1),
=75×300,
=22500;
(122)720÷16÷5,
=720÷(16×5),
=720÷80,
=9.
(123)456+328+672+44,
=(456+44)+(328+672),
=500+1000,
=1500;
(124)57×101,
=57×(100+1),
=57×100+57×1,
=5700+57,
=5757;
(125)87×99+87,
=87×(99+1),
=87×100,
=8700;
(126)84×72+84×29+84,
=84×72+84×29+84×1,
=84×(72+29+1),
=84×102,
=8568;
(127)6240﹣3885﹣1115,
=6240﹣(3885+1115),
=6240﹣5000,
=1240;
(128)25×13×4,
=(25×4)×13,
=100×13,
=1300;
(129)99×36+36,
=(99+1)×36,
=100×36,
=3600;
(130)351+188+12,
=351+(188+12),
=351+200,
=551;
(131)88×125,
=(80+8)×125,
=80×125+8×125,
=10000+1000,
=11000;
(132)720÷16÷5,
=720÷(16×5),
=720÷80,
=9;
(133)317×15﹣17×15,
=(317﹣17)×15,
=300×15,
=4500
(134)(125+7)×8,
=125×8+7×8,
=1000+56,
=1056;
(135)3200÷25÷4,
=3200÷(25×4),
=32;
(136)327+64+273+46,
=(327+273)+(64+46),
=600+110,
=710;
(137)639﹣58﹣142,
=639﹣(58+142),
=639﹣200,
=439;
(138)25×137×40,
=25×40×137,
=1000×137,
=137000;
(139)4200﹣1934﹣1066,
=4200﹣(1934+1066),
=4200﹣3000,
=1200;
(140)290×54+29×460,
=290×54+290×46,
=290×(54+46),
=290×100,
=29000;
(141)46×102+308,
=46×(100+2)+308,
=46×100+46×2+308,
=4600+92+308,
=4600+(92+308),
=4600+400,
=5000
(142)25×137×4,
=25×4×137,
=100×137,
=13700;
(143)38×101,
=38×(100+1),
=38×100+38×1,
=3800+38,
=3838.
(144)68×200×25,
=68×(200×25)
=68×5000,
=340000;
(145)101×87﹣87,
=(101﹣1)×87,
=100×87,
=8700;
(146)56×67+33×56,
=56×(67+33),
=56×100,
=5600;
(147)9+498+102+211,
=(498+102)+(9+211),
=600+220,
=820;
(148)1305+1238﹣405,
=(1305﹣405)+1238,
=900+1238,
=2138;
(149)2452﹣(75+452),
=2452﹣452﹣75,
=2000﹣75,
=1925
(150)245﹣65﹣35,
=245﹣(65+35),
=245﹣100,
=145;
(151)186+82+18,
=186+(82+18),
=186+100,
=286;
(152)25×(4×97),
=(25×4)×97,
=100×97,
=9700;
(153)8×(25+20),
=8×25+8×20,
=200+160,
=360;
(154)24×56+44×24,
=24×(56+44),
=24×100,
=2400;
(155)700÷4÷25,
=700÷(4×25),
=700÷100,
=7.
(156)39×49+39×51,
=39×(49+51),
=39×100,
=3900;
(157)108×25,
=27×4×25,
=27×(4×25),
=27×100,
=2700;
(158)25×125×2×4,
=(25×4)×(125×2),
=100×250,
=25000;
(159)56×99+56,
=56×(99+1),
=56×100,
=5600;
(160)124×75﹣124×72﹣124×2,
=124×(75﹣72﹣2),
=124×1,
=124;
(161)104×39﹣39×4,
=(104﹣4)×39,
=100×39,
=3900.
(162)28×99+28
=(99+1)×28,
=100×28,
=2800;
(163)(125×39)×8
=125×8×39,
=1000×39,
=39000
(164)6958+1998,
=6958+2000﹣2,
=8958﹣2,
=8956;
(165)(81+108)÷27,
=81÷27+108÷27,
=3+4,
=7;
(166)3254﹣599﹣254,
=3254﹣254﹣600+1,
=3000﹣600+1,
=2400+1,
=2401.
(167)26×8×125,
=26×(8×125),
=26×1000,
=26000;
(168)4200÷15÷2,
=4200÷(15×2),
=4200÷30,
=140;
(169)25×33×4,
=25×4×33,
=100×33,
=3300.
(170)25×29×4,
=(25×4)×29,
=100×29,
=2900;
(171)598×101,
=598×(100+1),
=598×100+598×1,
=59800+598,
=60398;
(172)125×48,
=(125×8)×6,
=1000×8,
=8000;
(173)105×32,
=(100+5)×32,
=100×32+5×32,
=3200+160,
=3360;
(174)4×43×25,
=4×25×43,
=100×43,
=4300
(175)109+127+73,
=109+(127+73),
=109+200,
=309;
(176)608﹣154﹣146,
=608﹣(154+146),
=608﹣300,
=308;
(177)165﹣97,
=165﹣(100﹣3),
=165﹣100+3,
=65+3,
=68;
(178)258+98,
=258+(100﹣2),
=258+100﹣2,
=358﹣2,
=356.
(179)109+127+73,
=109+(127+73),
=109+200,
=309;
(180)608﹣154﹣146,
=608﹣(154+146),
=608﹣300,
=308;
(181)165﹣97,
=165﹣(100﹣3),
=165﹣100+3,
=65+3,
=68;
(182)258+98,
=258+(100﹣2),
=258+100﹣2,
=358﹣2,
=356.
(183)36×64﹣64+64×65,
=(36﹣1+65)×64,
=100×64,
=6400,;
(184)24×125×7,
=3×8×125×7,
=(3×7)×(8×125),
=21×1000,
=21000;
(185)25×(24+8)×125,
=25×32×125,
=25×4×8×125,
=(25×4)×(8×125),
=100×1000,
=100000;
(186)438﹣298,
=438﹣300+2,
=138+2,
=140;
(187)25×37×8,
=25×8×37,
=200×37,
=7400;
(188)4800÷16÷5,
=4800÷(16×5),
=4800÷80,
=60;
(189)816﹣285﹣15,
=816﹣(285+15),
=816﹣300,
=516
(190)37×101﹣37,
=37×(100﹣1),
=37×100,
=3700;
(191)2563﹣79+437,
=(2563+437)﹣79,
=3000﹣79,
=2921.
(192)768﹣273﹣27
=768﹣(273+27),
=768﹣300,
=468;
(193)165+247+135
=165+135+247,
=300+247,
=547;
(194)198+355
=200+355﹣2,
=555﹣2,
=553;
(195)243﹣(43+26)
=243﹣43﹣36,
=200﹣36,
=164.
(196)45+63+37+55,
=(45+55)+(63+37),
=100+100,
=200;
(197)520﹣425﹣75,
=520﹣(425+75),
=520﹣500,
=20;
(198)8×(11×125),
=11×(8×125),
=11×1000,
=11000;
(199)525×99+525,
=525×(99+1),
=525×100,
=52500;
(200)3900÷25÷4,
=3900÷(25×4),
=3900÷100,
=39;
(201)275+364+636+725,
=(275+725)+(364+636),
=1000+1000,
=2000;
(202)1578﹣(61+578)﹣139,
=1578﹣61﹣578﹣139,
=(1578﹣578)﹣(61+139),
=1000﹣200,
=800
(203)9999×2010+2010
=(9999+1)×2010,
=10000×2010,
=20100000;
(204)456+123+544+877
=(456+544)+(123+877),
=1000+1000,
=2000;
(205)225×48+775×48
=225×48+775×48,
=(225+775)×48,
=1000×48,
=48000
(206)25×33×4×2,
=(25×4)×(33×2),
=100×66,
=6600;
(207)156+62﹣156+62,
=(156﹣156)+(62+62),
=0+124,
=124;
(208)700﹣296﹣104,
=700﹣(296+104),
=700﹣400,
=300;
(209)45+99×99+54,
=45+99×(100﹣1)+54,
=45+99×100﹣99×1+54,
=45+9900﹣99+54,
=(45+54﹣99)+9900,
=0+9900,
=9900;
(210)8×4×(125+25),
=(8×125×4)+(4×25×8),
=1000×4+100×8,
=4000+800,
=4800.
(211)25×(4×40),
=25×4×40,
=100×40,
=4000;
(212)47×16+63×16,
=(47+63)×16,
=110×16,
=1760;
(213)201×42﹣42,
=(201﹣1)×42,
=200×42,
=8400;
(214)6854﹣(893+854+107),
=6854﹣854﹣(893+107),
=6000﹣1000,
=5000;
(215)28×19×25,
=4×7×19×25,
=(4×25)×(7×19),
=100×133,
=13300;
(216)327×99,
=327×(100﹣1),
=327×100﹣327×1,
=32700﹣327,
=32373;
(217)54000÷8÷125,
=54000÷(8×125),
=54000÷1000,
=54;
(218)194+59+41+106,
=(194+106)+(59+41),
=300+100,
=400;
(219)383﹣(183+29),
=383﹣183﹣29,
=200﹣29,
=171;
(220)24×125,
=3×8×125,
=3×(8×125),
=3×1000,
=3000;
(221)156+45﹣55,
=155+1+45﹣55,
=(155﹣55)+(45+1),
=100+46,
=146
(222)1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;
(223)5127﹣866﹣134,
=5127﹣(866+134),
=5127﹣1000,
=4127;
(224)75+127+25+63,
=(75+25)+(127+63),
=100+190,
=290
(225)363×7+237×7,
=(363+237)×7,
=600×7,
=4200;
(226)4300÷25÷4,
=4300÷(25×4),
=4300÷100,
=43;
(227)25×7×44,
=25×7×4×11,
=(25×4)×(7×11),
=100×77,
=7700;
(228)327+64+273+46,
=(327+273)+(64+46),
=600+110,
=710;
(229)750﹣326﹣144,
=750﹣(326+144),
=750﹣470,
=280;
(230)278+598+122,
=278+122+598,
=400+598,
=998;
(231)647﹣289﹣111,
=647﹣(289+111),
=647﹣400,
=247;
(232)287+198,
=287+(200﹣2),
=287+200﹣2,
=487﹣2,
=485
(233)357+256+1000,
=613+1000,
=1613;
(234)49×102﹣2×49,
=49×(102﹣2),
=49×100,
=4900;
(235)1563+254+437+746,
=(1563+437)+(254+746),
=2000+1000,
=3000;
(236)25×64×125,
=25×4×2×8×125,
=(25×4)×(8×125)×2,
=100×1000×2,
=100000×2,
=200000;
(237)43000÷(43×5),
=43000÷43÷5,
=1000÷5,
=200;
(238)1736÷28+1064÷28,
=(1736+1064)÷28,
=2800÷28,
=100
(239)168×25×4,
=168×(25×4),
=168×100,
=16800;
(240)32×87+13×32,
=(87+13)×32,
=100×32,
=3200;
(241)1126﹣637﹣463,
=1126﹣(637+463),
=1126﹣1100,
=26;
(241)(101﹣98)×44÷12,
=3×44÷12,
=132÷12,
=11
(242)43×99+43
=(99+1)×43,
=100×43,
=4300;
(243)1270﹣538﹣462
=1270﹣(538+462),
=1270﹣1000,
=270;
(244)577+492+423+508
=(577+423)+(492+508),
=1000+1000,
=2000;
(245)48×125
=6×(8×125),
=6×1000,
=6000
(246)32000÷125
=32×1000÷125,
=32×(1000÷125),
=32×8,
=256;
(247)107+538+462
=107+(538+462),
=107+1000,
=1107;
(248)54×45+45+45×45
=(54+1+45)×45,
=100×45,
=4500;
(249)125×(25×32 )
=125×25×8×4,
=(125×8)×(25×4),
=1000×100,
=100000;
(250) 153×43﹢43×47,
=(153+47)×43,
=200×43,
=8600;
(251)101×16,
=(100+1)×16,
=100×16+16,
=1600+16,
=1616;
(252)125×5×8×2,
=125×8×(5×2),
=1000×10,
=10000;
(253)39+144+61,
=39+61+144,
=100+144,
=244;
(254)27×4×5,
=27×(4×5),
=27×20,
=540;
(255)857﹣318﹣182,
=857﹣(318+182),
=857﹣500,
=357.
(256)25×77﹣37×25,
=25×(77﹣37),
=25×40,
=1000;
(257)125×7×32,
=125×7×8×4,
=(125×8)×(7×4),
=1000×28,
=28000;
(258)124+38+76+62,
=(124+76)+(38+62),
=200+100,
=300;
(259)222﹣56﹣44,
=222﹣(56+44),
=222﹣100,
=122;
(260)16×125,
=2×(8×125),
=2×1000,
=2000.
(261)534+262+66+138,
=(534+66)+(262+138),
=600+400,
=1000;
(262)99×165+165,
=(99+1)×165,
=100×165,
=16500;
(263)29×8×125,
=29×(8×125),
=29×1000,
=29000;
(264)8×(125+12),
=8×125+8×12,
=1000+96,
=1096;
(265)1428﹣544﹣456,
=1428﹣(544+456),
=1428﹣1000,
=428.
(266)250×60,
=(250×4)×(60÷4),
=1000×15,
=15000;
(267)630÷35÷2,
=630÷(35×2),
=630÷70,
=9;
(268)125×16,
=125×8×2,
=1000×2,
=2000;
(269)800÷32,
=(800÷8)÷(32÷8),
=100÷4,
=25;
(270)25×36,
=25×4×9,
=100×9,
=900;
(271)810÷54,
=(810÷9)÷(54÷9),
=90÷6,
=15;
(272)55×14,
=55×2×7,
=110×7,
=770.
(273)179+54+321,
=179+321+54,
=500+54,
=554;
(274)13×14×125×2,
=(13×14)×(125×2),
=182×250,
=45500;
(275)1525﹣31+75﹣49,
=(1525+75)﹣(31+49),
=1600﹣80,
=1520;
(276)115×23﹣23×15,
=(115﹣15)×23,
=100×23,
=2300;
(277)23×199+23,
=23×(199+1),
=23×200,
=4600;
(278)72×5+72×4+72,
=72×(5+4+1),
=72×10,
=720;
(279)34×72+34×28,
=34×(72+28),
=34×100,
=3400;
(280)203×99,
=203×(100﹣1),
=203×100﹣203×1,
=20300﹣203,
=20097;
(281)(80+4)×25,
=80×25+4×25,
=2000+100,
=2100
(282)125×7×8,
=125×8×7,
=1000×7,
=7000;
(283)27×45+55×27,
=27×(45+55),
=27×100,
=2700;
(284)728﹣155﹣328,
=728﹣328﹣155,
=400﹣155,
=245;
(285)463+342+158,
=463+(342+158),
=463+500,
=963;
(286)873﹣322+278,
=551+278,
=829;
(287)1234﹣773﹣327,
=1234﹣(773+327),
=1234﹣1100,
=134;
(288)111×9+111,
=111×(9+1),
=111×10,
=1110
(289)25×294×4,
=(25×4)×294,
=100×294,
=29400;
(290)4000÷125÷8,
=4000÷(125×8),
=4000÷1000,
=4;
(291)18×45+18×55,
=(45+55)×18,
=100×18,
=1800;
(292)239+144+61
=239+61+144,
=300+144,
=444.
(293)728﹣155﹣328,
=728﹣328﹣155,
=400﹣155,
=245;
(294)463+342+158,
=463+(342+158),
=463+500,
=963;
(295)873﹣322+278,
=551+278,
=829;
(296)1234﹣773﹣327,
=1234﹣(773+327),
=1234﹣1100,
=134;
(297)111×9+111,
=111×(9+1),
=111×10,
=1110.
(298)24×125,
=3×8×125,
=3×(8×125),
=3×1000,
=3000;
(299)114+48+86+52,
=(114+86)+(48+52),
=200+100,
=300;
(300)469×5×2,
=469×(5×2),
=469×10,
=4690;
(301)720÷15÷4,
=720÷(15×4),
=720÷60,
=12.
(302)3288﹣1999+212,
=3288﹣2000+1+212,
=1288+1+212,
=(1288+212)+1,
=1500+1,
=1501;
(303)769×101﹣769,
=769×(101﹣1),
=769×100,
=76900,;
(304)39000÷60÷50,
=39000÷(60×50),
=39000÷3000,
=13;
(305)96×125×7×24,
=96×7×3×125×8,
=96×7×3×(125×8),
=672×3×1000,
=2016×1000,
=2016000.
(306)1795+376+624﹣595,
=(1795﹣595)+(376+624),
=1200+1000,
=2200;
(307)102×79﹣79×2,
=(102﹣2)×79,
=100×79,
=7900;
(308)25×404,
=25×(4×101),
=(25×4)×101,
=100×101,
=10100.
(309)628﹣46+454,
=582+454,
=1036;
(310)(80﹣1)×125,
=80×125﹣1×125,
=10000﹣125,
=9875;
(311)(49+49+49+49)×250,
=(49×4)×250,
=49×(4×25),
=49×100,
=4900;
(312)45×54+45×45+45,
=45×(54+45+1),
=45×100,
=4500;
(313)324+67+76,
=324+76+67,
=400+67,
=467;
(314)34×27+66×27,
=(34+66)×27,
=100×27,
=2700;
(315)99×52+52,
=(99+1)×52,
=100×52,
=5200.
(316)(125+9)×8,
=125×8+9×8,
=1000+72,
=1072;
(317)3.27+6.4+2.73+4.6,
=(3.27+2.73)+(6.4+4.6),
=6+11,
=17;
(318)3200÷25÷4,
=3200÷(25×4),
=3200÷100,
=32;
(319)137×13+137×6+137,
=137×(13+6+1),
=137×20,
=2740.
(320)450×34+45×660
=45×340+45×660,
=45×(340+660),
=45×1000,
=45000.
(321)827﹣98﹣102,
=827﹣(98+102),
=827﹣200,
=627;
(322)378+169+22,
=378+22+169,
=400+169,
=569;
(323)475﹣197,
=(475+3)﹣(197+3),
=478﹣200,
=278;
(324)188+97+12,
=188+12+97,
=200+97,
=297;
(325)235+36+45,
=235+45+36,
=280+36,
=316;
(326)372+89+38,
=372+38+89,
=410+89,
=499;
(327)464+28+36,
=464+36+28,
=528;
(328)597+24+3,
=597+3+24,
=600+24,
=624;
(329)682﹣55﹣27,
=682﹣(55+27),
=682﹣82,
=600;
(330)725×23×4,
=725×4×23,
=2900×23,
=66700;
(331)8125×16,
=8125×8×2,
=65000×2,
=130000;
(333)932×25×25,
=23300×25,
=582500
(334)325+325+325+324,
=325+325+325+325﹣1,
=325×4﹣1,
=1300﹣1,
=1299;
(335)125×24,
=125×8×3,
=1000×3,
=3000;
(336)1200÷25,
=(1200×4)÷(25×4),
=4800÷100,
=48;
(337)908×11﹣908,
=908×(11﹣1),
=908×10,
=9080.
(338)329×99+329,
=329×(99+1),
=329×100,
=32900;
(339)12150÷45﹣7650÷45,
=(12150﹣7650)÷45,
=4500÷45,
=100;
(340)27+979+1973+9021,
=(27+1973)+(979+9021),
=2000+10000,
=12000
(341)1358-(442+358)+622,
=1358-358+(622﹣422),
=1000﹣200,
=800;
(342)25×58+25+25×41,
=25×(58+1+41),
=25×100,
=2500;
(343)101×15+358,
=(100+1)×15+358,
=100×15+15+358,
=1500+15+358,
=1515+358,
=1873;
(344)104×45÷52,
=104÷52×45,
=2×45,
=90;
(345)25×(40×6),
=25×40×6,
=1000×6,
=6000;
(346)532×76÷38,
=532×(76÷38),
=532×2,
=1064;
(347)173×8÷173×8,
=173÷173×8×8,
=1×8×8,
=64;
(348)28×25+375÷25,
=700+15,
=715;
(349)4260÷60×104,
=71×104,
=71×(100+4),
=71×100+71×4,
=7100+284,
=7384;
(350)796×3+584,
=2388+584,
=2972;
(351)25×319×4,
=25×4×309,
=100×309,
=30900;
(352)99×52,
=(100﹣1)×52,
=100×52﹣1×52,
=5200﹣52,
=5148;
(353)250×28,
=250×4×7,
=1000×7,
=7000;
(354)630÷35÷2,
=630÷(35×2),
=630÷70,
=9;
(355)52×72+52×29﹣52,
=52×(72+29﹣1),
=52×100,
=5200
(356)243+26+274,
=243+(26+274),
=243+300,
=543;
(357)35.24﹣(15.24+8.16),
=35.24﹣15.24﹣8.16,
=20﹣8.16,
=11.84;
(358)354﹣99,
=354﹣100+1,
=254+1,
=255;
(359)83×5+83×2+83×3,
=83×(5+2+3),
=83×10,
=830.
(360)43×202,
=43×(200+2),
=43×200+43×2,
=8600+86,
=8686;
(361)185×38+15×38,
=(185+15)×38,
=200×38,
=7600;
(362)160×25,
=40×4×25,
=40×(4×25),
=40×100,
=4000;
(363)420÷[(205﹣198)×4],
=420÷[7×4],
=420÷7÷4,
=60÷4,
=15;
(364)96×101﹣96,
=96×(101﹣1),
=96×100,
=9600.
(365)2000﹣586﹣114,
=2000﹣(586+114),
=2000﹣700,
=1300;
(366)55×25+25×45,
=(55+45)×25,
=100×25,
=2500;
(367)(40+4)×25,
=40×25+4×25,
=1000+100,
=1100;
(368)540÷12÷5,
=540÷(12×5),
=540÷60,
=9;
(369)77×13﹣13×27,
=(77﹣27)×13,
=50×13,
=650;
(370)104×32,
=(100+4)×32,
=100×32+32×4,
=3200+128,
=3328.
(371)282+142+158,
=282+(142+158),
=282+300,
=582;
(372)577+204,
=577+200+4,
=777+4,
=781;
(373)45×14,
=45×2×7,
=90×7,
=630;
(374)78×99,
=78×(100﹣1),
=78×100﹣78,
=7800﹣78,
=7722;
(375)542﹣199+99,
=542﹣(199﹣99),
=542﹣100,
=442;
(376)65+99×65,
=(1+99)×65,
=100×65,
=6500;
(377)470÷(5×47),
=470÷5÷47,
=470÷47÷5,
=10÷5,
=2;
(378)1621﹣(312+621)﹣688,
=1621﹣312﹣621﹣688,
=(1621﹣621)﹣(312+688),
=1000﹣1000,
=0.
(379)1185+1733+115+3267,
=(1185+115)+(1733+3267),
=1300+5000,
=6300;
(380)101×99,
=(100+1)×99,
=100×99+1×99,
=9900+99,
=9999;
(381)4920÷24+3250÷125,
=(4920×5)÷(24×5)+(3250×8)÷(125×8),
=24600÷120+26000÷1000,
=205+26,
=231;
(382)24×57+43×24,
=24×(57+43),
=24×100,
=2400;
(383)36+42+64+158,
=(36+64)+(42+158),
=100+200,
=300;
(384)1600﹣217﹣483,
=1600﹣(217+483),
=1600﹣700,
=900;
(385)163×8+137×8,
=(163+137)×8,
=300×8,
=2400;
(386)4200÷25÷4,
=4200÷(25×4),
=4200÷100,
=42;
(387)100﹣28+72,
=72+72,
=144;
(388)200﹣28×5,
=200﹣140,
=60;
(389)297﹣28﹣72,
=297﹣(28+72),
=297﹣100,
=197;
(390)4×89×25,
=4×25×89,
=100×89,
=8900;
(391)78+99+22,
=78+22+99,
=100+99,
=199;
(392)900÷25÷4,
=900÷(25×4),
=900÷100,
=9.
(393)329×101,
=329×(100+1),
=329×100+329×1,
=32900+329,
=33229;
(394)54×98+46×98,
=(54+46)×98,
=100×98,
=9800;
(395)3000÷125,
=(3000×8)÷(125×8),
=24000÷1000,
=24;
(396)800÷25,
=(800×4)÷(25×4),
=3200÷100,
=32;
(397)(125×25)×8,
=125×8×25,
=1000×25,
=25000;
(398)57×15+42×15+15,
=(57+42+1)×15,
=100×15,
=1500.
(399)373+733+627,
=373+627+733,
=1000+733,
=1733;
(400)623﹣187﹣213+377,
=(623+377)﹣(187+213),
=1000﹣400,
=600.
(401)98+99×98,
=98×(1+99),
=98×100,
=9800;
(402)102×36,
=(100+2)×36,
=100×36+2×36,
=3600+72,
=3672;
(403)276+428+124+572,
=(276+124)+(428+572),
=400+1000,
=1400;
(404)375÷(25﹣10)×15,
=375÷15×15,
=375×(15÷15),
=375;
(405)125×43﹣25×43,
=(125﹣25)×43,
=4300;
(406)32×202,
=32×(200+2),
=32×200+32×2,
=6400+64,
=6464;
(407)285×38+15×38,
=(285+15)×38,
=300×38,
=11400;
(408)120×25,
=30×4×25,
=30×(4×25),
=30×100,
=3000;
(409)490÷[(215﹣208)×4],
=490÷[7×4],
=490÷7÷4,
=70÷4,
=17.5;
(410)95×101﹣95,
=95×(101﹣1),
=95×100,
=9500.
(411)7614﹣(2164+871),
=7614﹣3035,
=4579.
(412)578+(791+422)+309,
=(578+422)+(791+309),
=1000+1100,
=2100.
(413)24×125×7,
=(3×7)×(8×125),
=21×1000,
=21000;
(414)536×64﹣64-64×35,
=(536﹣1-35)×64,
=500×64,
=32000;
(415)25×99×4,
=25×4×99,
=100×99,
=9900;
(416)121+131+141+151+161+171+181,
=151﹣30+151﹣20+151﹣10+151+151+10+151+20+151+30,
=(151+151+151+151+151+151+151)+(30﹣30+20﹣20+10﹣10),
=151×7,
=1057;
(417)(80﹣1)×125,
=80×125﹣1×125,
=10000﹣125,
=9875;
(418)45×54+45×45+45,
=45×(54+45+1),
=45×100,
=4500;
(419)(543+543+543+543)×25,
=543×4×25,
=543×(4×25),
=543×100,
=54300.
(420)2300﹣165﹣35,
=2300﹣(165+35),
=2300﹣200,
=2100;
(421)25×204,
=25×(200+4),
=25×200+25×4,
=5000+100,
=5100;
(422)125×(8+4),
=125×8+125×4,
=1000+500,
=1500;
(423)3700÷25÷4,
=3700÷(25×4),
=3700÷100,
=37;
(424)56×32﹣46×32,
=(56﹣46)×32,
=10×32,
=320;
(425)99×78+78,
=(99+1)×78,
=100×78,
=7800.
(426)125×103﹣125×3,
=125×(103﹣3),
=125×100,
=12500;
(427)2700﹣425﹣175,
=2700﹣(425+175),
=2700﹣600,
=2100;
(428)125×88,
=125×8×11,
=1000×11,
=11000;
(429)41+127+59+173,
=(41+59)+(127+173),
=100+300,
=400;
(430)1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;
(431)156×l0l﹣156,
=156×(101﹣1),
=156×100,
=15600.
(432)25×71×4,
=25×4×71,
=100×71,
=7100;
(433)135×99,
=135×(100﹣1),
=135×100﹣135×1,
=13500﹣135,
=13365;
(434)49×99+49,
=49×(99+1),
=49×100,
=4900;
(435)5620÷(562×5),
=5620÷562÷5,
=10÷5,
=2;
(436)37+125+63+175,
=(37+63)+(125+175),
=100+300,
=400.
(437)285+195+105+415,
=(285+415)+(195+105),
=700+300,
=1000;
(438)643﹣48﹣12﹣40,
=643﹣(48+12+40),
=643﹣100,
=543;
(439)25×32,
=(25×4)×8,
=100×8,
=800;
(440)8×48×125,
=(8×125)×48,
=1000×48,
=48000;
(441)5400÷45÷2,
=5400÷(45×2),
=5400÷90,
=60;
(442)360÷45,
=360÷9÷5,
=40÷5,
=8;
(443)148×8+152×8,
=(148+152)×8,
=300×8,
=2400;
(444)99×34,
=34×100﹣34×1,
=3400﹣34,
=3366;
(445)25×201﹣25,
=25×(201﹣1),
=25×200,
=5000.
(446)1268+227+473+132,
=(1268+132)+(227+473),
=1400+700,
=2100;
(447)202×12-24,
=12×(202-2),
=2400;
(448)789﹣511﹣89,
=789﹣(511+89),
=789﹣600,
=189;
(449)735﹣238﹣162,
=735﹣(238+162),
=735﹣400,
=335.
(450)356+83+144,
=(356+144)+83,
=500+83,
=583;
(451)53×99,
=53×(100﹣1),
=53×100﹣53,
=5300﹣53,
=5247;
(452)199×39+39,
=39×(199+1),
=39×200,
=7800;
(453)7826﹣(826﹣1300),
=7826﹣826+1300,
=7000+1300,
=8300;
(454)87×99+87,
=87×(99+1),
=87×100,
=8700;
(455)125×88,
=125×(8×11),
=125×8×11,
=1000×11,
=11000;
(456)54×102,
=54×(100+2),
=54×100+54×2,
=5400+108,
=5508;
(457)125×(4+8),
=125×4+125×8,
=500+1000,
=1500;
(458)36×111+888×8,
=36×111+111×64,
=111×(36+64),
=111×100,
=11100;
(459)65×34+34×34+34,
=34×(65+34+1),
=34×100,
=3400;
(460)25×13×4,
=25×4×13,
=100×13,
=1300.
(461)567+142+558,
=567+(142+558),
=567+700,
=1267;
(462)546﹣378﹣162,
=546﹣(378+162),
=546﹣540,
=6;
(463)1458+999,
=1458+1000﹣1,
=2458﹣1,
=2457;
(464)796+643﹣596,
=796﹣596+643,
=200+643,
=843;
(465)475﹣303,
=475﹣300﹣3,
=175﹣3,
=172;
(466)265+318+35,
=265+35+318,
=300+318,
=618.
(467)25×387×4,
=(25×4)×387,
=100×387,
=38700;
(468)264+(37+136)+163,
=264+37+136+163,
=(264+136)+(37+163),
=400+200,
=600;
(469)76×102,
=76×(100+2),
=76×100+76×2,
=7600+152,
=7752;
(470)56×38+38+43×38,
=(56+43+1)×38,
=100×38,
=3800.
(471)2358+998,
=2358+1000﹣2,
=3358﹣2,
=3356;
(472)5927﹣(458+627),
=5927﹣627﹣458,
=5300﹣458,
=4842;
(473)3752﹣698,
=3752﹣700+2,
=3052+2,
=3054;
(474)2000﹣586﹣114
=2000﹣(586+114),
=2000﹣700,
=1300;
(475)67×101﹣67
=(101﹣1)×67,
=100×67,
=6700;
(476)125×48
=125×8×6,
=1000×6,
=6000;
(477)34×126+37×73+37
=4284+2701+37,
=7022;
(478)85+137+63+215,
=(85+215)+(137+63),
=300+200,
=500;
(479)885﹣(301﹣115),
=885﹣301+115,
=(885+115)﹣301,
=1000﹣301,
=699;
(480)40×(25+125),
=40×25+40×125,
=1000+5000,
=6000;
(481)99×123,
=(100﹣1)×123,
=100×123﹣1×123,
=12300﹣123,
=12177;
(482)64×125,
=8×8×125,
=8×(8×125),
=8×1000,
=8000;
(483)79999+7999+799+79,
=(80000﹣1)+(8000﹣1)+(800﹣1)+(80﹣1),
=(80000+8000+800+80)﹣(1+1+1+1),
=88880﹣4,
=88876;
(484)630÷45,
=630÷(9×5),
=630÷9÷5,
=70÷5,
=14;
(485)168×68+33×168﹣168,
=168×(68+33﹣1),
=168×100,
=16800;
(486)126×72,
=(125+1)×72,
=125×72+1×72,
=125×8×9+1×72,
=1000×9+72,
=9000+72,
=9072.
(487)875+659+125
=875+125+659,
=1000+659,
=1659;
(488)813﹣256﹣344
=813﹣(256+344),
=813﹣600,
=213;
(489)77+649﹣649
=649﹣649+77,
=0+77,
=77;
(490)99×7+7
=(99+1)×7,
=100×7,
=700.
(491)459×802+197×459+459,
=459×802+197×459+459×1,
=459×(802+197+1),
=459×1000,
=459000.
(492)125×(8×2)+100,
=125×8×2+100,
=1000×2+100,
=2000+100,
=2100;
(493)230×24+240×77,
=23×240+240×77,
=240×(23+77),
=240×100,
=24000;
(494)46×101﹣146,
=46×(100+1)﹣146,
=4600+46﹣146,
=4600﹣(146﹣46),
=4600﹣100,
=4500;
(495)(841﹣41)÷25×4,
=800÷25×4,
=8×100÷25×4,
=8×(100÷25)×4,
=8×4×4,
=32×4,
=128.
(496)135+39+55+61,
=(135+55)+(39+61),
=190+100,
=290;
(497)45×201,
=45×(200+1),
=45×200+45×1,
=9000+45,
=9045;
(498)2000÷25÷8,
=2000÷(25×8),
=2000÷200,
=10;
(499)17×43﹣43×7,
=(17﹣7)×43,
=10×43,
=430;
(500)278﹣122﹣78,
=278﹣(122+78),
=278﹣200,
=78.
(501)2000÷125÷8,
=2000÷(125×8),
=2000÷1000,
=2;
(502)800﹣138﹣162,
=800﹣(138+162),
=800﹣300,
=500;
(503)99×38+38,
=(99+1)×38,
=100×38,
=3800;
(504)25×33×4,
=25×4×33,
=100×33,
=3300;
(505)(125+70)×8,
=125×8+70×8,
=1000+560,
=1560;
(506)101×87,
=(100+1)×87,
=100×87+1×87,
=8700+87,
=8787;
(507)312×4+188×4,
=(312+188)×4,
=500×4,
=2000;
(508)28×225﹣2×225﹣6×225,
=(28﹣2﹣6)×225,
=20×225,
=4500.
(509)389+327+211
=389+211+327,
=600+327,
=927;
(510)608﹣154﹣146
=608﹣(154+146),
=608﹣300,
=308;
(511)587﹣98
=587﹣(100﹣2),
=587﹣100+2,
=487+2,
=489;
(512)125×53×80,
=125×80×53,
=1000×53,
=53000;
(513)150+(140×8﹣252),
=150+(1120﹣252),
=150+868,
=1018;
(514)178×78﹣78×78,
=78×(178﹣78),
=78×100,
=7800;
(515)771﹣169+229﹣431,
=(771+229)﹣(169+431),
=1000﹣600,
=400.
(516)25×19×4,
=25×4×19,
=100×19,
=1900;
(517)(25×125)×(8×40),
=(25×40)×(125×8),
=1000×1000,
=1000000;
(518)125×8×8,
=1000×8,
=8000;
(519)35×39+65×39,
=(35+65)×39,
=100×39,
=3900;
(520)45×(200+2),
=45×200+45×2,
=9000+90,
=9090.
(521)125×32,
=125×(8×4),
=(125×8)×4,
=1000×4,
=4000;
(522)195×115﹣195×15,
=195×(115﹣15),
=195×100,
=19500;
(523)25+75﹣25+75,
=(25﹣25)+(75+75),
=0+150,
=150;
(524)99×38+38,
=(99+1)×38,
=100×38,
=3800;
(525)3200÷4÷25,
=3200÷(4×25),
=3200÷100,
=32;
(526)273﹣73﹣27,
=273﹣(73+27),
=273﹣100,
=173.
(527)538﹣(461+38),
=538﹣499,
=39;
(528)125×48,
=125×(8×6),
=(125×8)×6,
=1000×6,
=6000;
(529)1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;
(530)237﹣125+163﹣175,
=(237+163)﹣(125+175),
=400﹣300,
=100;
(531)156×l0l﹣156,
=156×(l0l﹣1),
=156×100,
=15600;
(532)78×103,
=78×(100+3),
=78×100+78×3,
=7800+234,
=8034;
(533)25×36×11,
=25×4×9×11,
=(25×4)×(9×11),
=100×99,
=9900;
(534)14×37+63×14,
=14×(37+63),
=14×100,
=1400;
(535)(25+125 )×8,
=25×8+125×8,
=200+1000,
=1200;
(536)5×4×20×25,
=4×25×5×20,
=(4×25)×(5×20),
=100×100,
=10000;
(537)168﹣52﹣48,
=168﹣(52+48),
=168﹣100,
=68;
(538)1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;
(539)37+125+63+175,
=(37+63)+(125+175),
=100+300,
=400;
(540)28×37+73×37﹣37,
=37×(28+73﹣1),
=37×100,
=3700;
(541)(300﹣1456÷26)×32,
=(300﹣56)×32,
=244×32,
=7808;
(542)8×(29×l25),
=(8×125)×29,
=1000×29,
=29000;
(543)99×l0l,
=99×(100+1),
=99×100+99×1,
=9900+99,
=9999.
(544)27×48+27×52,
=27×(48+52),
=27×100,
=2700;
(545)125×25×4×8,
=(125×8)×(25×4),
=1000×100,
=100000;
(546)125×(296×80),
=125×80×296,
=10000×296,
=2960000;
(547)33×33+99×89,
=99×3+99×89,
=99×(3+89),
=99×92,
=(100﹣1)×92,
=100×92﹣1×92,
=9200﹣92,
=9108;
(548)560÷7÷8,
=560÷(7×8),
=560÷56,
=10;
(549)88×201﹣88,
=88×(201﹣1),
=88×200,
=17600
(550)36×7÷36×7,
=36÷36×7×7,
=1×7×7,
=49;
(551)1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;
(552)32×(25×l25),
=32×25×125,
=8×4×25×125,
=4×25×(8×125),
=100×1000,
=100000;
(553)32+155+68+145,
=(32+68)+(155+145),
=100+300,
=400;
(554)201×16,
=(200+1)×16,
=200×16+16,
=3200+16,
=3216.
(555)125×103﹣125×3,
=125×(103﹣3),
=125×100,
=12500;
(556)2700﹣425﹣175,
=2700﹣(425+175),
=2700﹣600,
=2100;
(557)125×44,
=(125×4)×11,
=500×11,
=5500;
(558)41+127+59+173,
=(41+59)+(127+173),
=100+300,.
=400;.
(559)2300÷25÷4,
=2300÷(25×4),
=2300÷100,
=23;
(560)156×l0l﹣156,
=156×(l0l﹣1),
=156×100,
=15600;
(561)49×99+49,
=49×(99+1),
=49×100,
=4900.
(562)5787﹣329﹣1071,
=5787﹣(329+1071),
=5787﹣1400,
=4387;
(563)52×11+11×18,
=(52+18)×11,
=70×11,
=770;
(564)912+88﹣512,
=912-512+88,
=488
(565)376+28+172+124, =(376+124)+(28+172), =500+200, =700; (566)43000÷8÷125, =43000÷(8×125), =43000÷1000, =43; (567)99×38+38, =38×(99+1), =38×100, =3800; (568)25×104, =25×(100+4), =25×100+25×4, =2500+100, =2600; (569)8×(29×l25), =8×125×29, =1000×29, =29000; (570)688-534+112-166, =(688+112)-(534+166), =800-700, =100; (571)156×l0l-156, =156×(101-1), =156×100, =15600; (572)164-83-17, =164-(83+17), =164-100, =64; (573)26×148-48×26, =26×(148-48), =26×100, =2600.
(573)600÷25÷4, =600÷(25×4), =600÷100, =6; (574)83×29+71×83, =83×(29+71), =83×100, =8300; (575)199+199×99, =199×(99+1), =199×100, =19900; (576)560÷(56÷9), =560÷56×9
=10×9, =90; (577)101×99, =(100+1)×99, =100×99+1×99, =9900+99, =9999; (578)28×37+73×37-37, =(28+73-1)×37, =100×37, =3700.
(579)7820-375-625, =7820-(375+625), =7820-1000, =6820; (580)25×33×4, =25×4×33, =100×33, =3300; (581)329+753+571+47, =(329+571)+(47+753), =900+800, =1700; (582)75+47×3, =75+141, =216; (583)2500÷4÷25, =2500÷(4×25), =2500÷100, =25; (584)(16+24)×35÷70, =40×35÷70, =1400÷70, =20; (585)875+209+191-75, =(875-75)+(209+191), =800+400, =1200; (586)57×43+33×43, =(57+33)×43, =90×43, =3870.
(587)25×103-125×3, =25×(100+3)-125×3, =25×100+25×3-125×3, =2500+75-375, =2575-375, =2200. (588)2700-425-175, =2700-(425+175), =2700-600, =2100; (589)1200÷25÷4, =1200÷(25×4), =1200÷100, =12; (590)41+127+59+173, =(41+59)+(127+173), =100+300, =400; (591)156×83+156×17, =156×(83+17), =156×100, =15600; (592)25×73×4, =25×4×73, =100×73, =7300.
(593)745-179-21, =745-(179+21), =745-200, =545; (594)125×66×8, =(125×8)×66, =1000×66, =66000; (595)7200÷45÷2, =7200÷(45×2), =7200÷90, =80; (596)1600-704-275-225-296, =1600-(704+296)-(275+225), =1600-1000-500, =600-500, =100; (597)27+979+1973+9021, =(27+1973)+(979+9021), =2000+10000, =12000; (598)3291+599-898, =3291+600-1-900+2, =3291+600-900-1+2, =3891-900-1+2, =2991-1+2, =2990+2, =2992; (599)833-243-457, =833-(243+457), =833-700, =133; (600)199×47+47, =(199+1)×47, =200×47, =9400.