四年级简便运算.docx
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四年级简便运算.docx
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四年级简便运算
四年级数学整数简便运算120道(有答案)
(1)67+42+33+58
(2)258-58-26-74(3)125×16
(4)50×(2×4)×25(5)7×8×3×125(6)26×103
(7)501×12
(8)25×(408)(9)39×14+61×14(10)163×8+37×8(11)202×13
(12)77×4×5
(13)27×99
(14)48×250
(15)98+303
(16)49+49×49(17)55×25+25×45(18)123×67-23×67
(19)39×101-39(20)99×64+64(21)76×23+24×23(22)12+19×12(23)21+254+79+46(24)25×16×5
(25)52×32+48×32(26)18×137-18×37(27)450÷18
(28)420÷35(29)480÷15
(30)21×99
(31)125×32
(32)12×301
(33)75×3×4
(34)19+99×19(35)256×9-46×9(36)13+13×49(37)(25125)×8(38)541×67-67×441
(39)43×201
(40)102×35
(41)304×22
(42)(304)×25(43)38×7+62×7(44)152×8+148×8(45)16×401
(46)103×23
(47)(30+2)×15(48)125×(816)(49)68×48+68×2(50)5×27+63×5(51)12×(40-5)(52)64×9-14×9(53)35×98
(54)23×134-34×23(55)102×45
(56)648+203
(57)98×32
(58)44×25
(59)63+15×2(60)43+43×39(61)27×37+37×23(62)256×7-56×7(63)48×101-48(64)99×62+62(65)41×99
(66)765+98
(67)560÷16
(68)201×34(69)36×25
(70)304+297
(71)18×45+18×55(72)226×13-26×13(73)15×301-15(74)(308)×25(75)25×65+25×25(76)75×141-75×40(77)125×18
(78)25×35+25
(79)71×23-71×13(80)125×(80-8)(81)101×89-89(82)88×22+22×12(83)28×57+43×28(84)202×41
(85)25×19×4(86)47+99+47(87)103×37
(88)34×201(89)25×5×16(90)56+56×49(91)57×26+26×43(92)373×9-73×9(93)78×101-78(94)199×53+53(95)25×124-24×25(96)250×28
(97)125×16
(98)250×9×4
(99)48×125
(100)24×250(101)402×15(102)25250)×4(103)199×9+199(104)27×18+82×27(105)2×46+46×18(106)401×25(107)72×101(108)42×(30-1)(109)101×85-85(110)25×19
(111)152×49+51×152(112)50×(60+8)(113)93×
(114)13×125×8(115)125×17+63×125(116)492-145-155(117)43×25×2(118)24×25
(119)28×111-28×11(120)63×8+91×63+63
整数简便运算120道参考答案:
(1)67+42+33+58
=(6733)(4258)
=100100
=200
(2)258-58-26-74
=258-58-(2674)
=200-100
=100
(3)125×16
=125×8×2
=1000×2
=2000
(4)50×(2×4)×25
=(50×2)×(4×25)
=100×100
=10000
(5)7×8×3×125
=(7×3)×(8×125)
=21×1000=21000
(6)26×103
=26×(1003)
=26×10026×3
=260078
=2678
(7)501×12
=(5001)×12
=500×121×12
=600012
=6012
(8)25×(408)
=25×4025×8
=1000200
=1200
(9)39×14+61×14=(3961)×14=100×14=1400(10)163×8+37×8=(16337)×8=200×8=1600(11)202×13=(2002)×13=200×132×13=260026
=2626
(12)77×4×5
=77×(4×5)=77×20=1540(13)27×99
=27×(100-1)=27×100-27×1=2673
(14)48×250
=12×4×250
=12×(4×250)=12×1000
=12000
(15)98+303
=983300
=102300
=402
(16)49+49×49=49×(149)=49×50
=2450
(17)55×25+25×45
=25×(5545)
=25×100
=2500
(18)123×67-23×67
=(123-23)×67
=100×67=6700
(19)39×101-39
=39×(101-1)
=39×100=3900
(20)99×64+64
=(991)×64
=100×64
=6400
(21)76×23+24×23
=(7624)×23
=100×23
=2300
(22)12+19×12
=12×(119)
=12×20
=240
(23)21+254+79+46
=(21+79)+(254+46)=100300=400
(24)25×16×5
=25×4×4×5
=(25×4)×(4×5)
=100×20=2000
(25)52×32+48×32
=(52+48)×32=100×32
=3200
(26)18×137-18×37=18×(137-37)=18×100
=1800
(27)450÷18
=450÷(3×6)
=450÷3÷6
=150÷6
=25
(28)420÷35
=420÷(7×5)
=420÷7÷5
=60÷5=12
(29)480÷15
=480÷3÷5
=160÷5
=32
(30)21×99
=21×(100-1)
=21×100-21×1
=2100-21
=2079
(31)125×32
=125×8×4
=1000×4=4000(32)12×301
=12×(3001)
=12×30012×1
=360012=3612
(33)75×3×4
=75×4×3
=300×3=900(34)19+99×19
=19×(991)
=1900
(35)256×9-46×9
=(256-46)×9
=210×9=1890(36)13+13×49
=13×(149)
=13×50=650(37)(25125)×8
=25×8125×8
=2001000
=1200
(38)541×67-67×441=(541-441)×67
=100×67=6700(39)43×201
=43×(2001)
=43×20043×1
=860043=8643(40)102×35
=(1002)×35
=100×352×35
=350070
=3570
(41)304×22
=(3004)×22
=300×224×22
=660088=6688
(42)(304)×25=30×254×25=750100=850(43)38×7+62×7=(3862)×7
=100×7
=700
(44)152×8+148×8=(152148)×8=300×8=2400(45)16×401
=16×(4001)
=16×40016×1=640016=6416(46)103×23
=(1003)×23
=100×233×23
=2300+69
=2369
(47)(30+2)×15=30×152×15=450+30=480(48)125×(816)=125×8125×16=10002000
=3000
(49)68×48+68×2=68×(482)
=68×50
=3400
(50)5×27+63×5
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