整数简便运算题有参考答案过程.docx
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整数简便运算题有参考答案过程
四年级数学整数简便运算120道
(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×(40+8)
(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)(25+125)×8
(38)541×67-67×441
(39)43×201
(40)102×35
(41)304×22
(42)(30+4)×25
(43)38×7+62×7
(44)152×8+148×8
(45)16×401
(46)103×23
(47)(30+2)×15
(48)125×(8+16)
(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)(30+8)×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)25+250)×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)93×99+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
参考答案
(1)67+42+33+58
=(67+33)+(42+58)
=100+100
=200
(2)258-58-26-74
=258-58-(26+74)
=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×(100+3)
=26×100+26×3
=2600+78
=2678
(7)501×12
=(500+1)×12
=500×12+1×12
=6000+12
=6012
(8)25×(40+8)
=25×40+25×8
=1000+200
=1200
(9)39×14+61×14
=(39+61)×14
=100×14=1400
(10)163×8+37×8
=(163+37)×8
=200×8=1600
(11)202×13
=(200+2)×13
=200×13+2×13
=2600+26
=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
=98+3+300
=102+300
=402
(16)49+49×49
=49×(1+49)
=49×50
=2450
(17)55×25+25×45
=25×(55+45)
=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
=(99+1)×64
=100×64
=6400
(21)76×23+24×23
=(76+24)×23
=100×23
=2300
(22)12+19×12
=12×(1+19)
=12×20
=240
(23)21+254+79+46
=(21+79)+(254+46)
=100+300=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×(300+1)
=12×300+12×1
=3600+12=3612
(33)75×3×4
=75×4×3
=300×3=900
(34)19+99×19
=19×(99+1)
=1900
(35)256×9-46×9
=(256-46)×9
=210×9=1890
(36)13+13×49
=13×(1+49)
=13×50=650
(37)(25+125)×8
=25×8+125×8
=200+1000
=1200
(38)541×67-67×441
=(541-441)×67
=100×67=6700
(39)43×201
=43×(200+1)
=43×200+43×1
=8600+43=8643
(40)102×35
=(100+2)×35
=100×35+2×35
=3500+70
=3570
(41)304×22
=(300+4)×22
=300×22+4×22
=6600+88
=6688
(42)(30+4)×25
=30×25+4×25
=750+100=850
(43)38×7+62×7
=(38+62)×7
=100×7
=700
(44)152×8+148×8
=(152+148)×8
=300×8=2400
(45)16×401
=16×(400+1)
=16×400+16×1
=6400+16=6416
(46)103×23
=(100+3)×23
=100×23+3×23
=2300+69
=2369
(47)(30+2)×15
=30×15+2×15
=450+30=480
(48)125×(8+16)
=125×8+125×16
=1000+2000
=3000
(49)68×48+68×2
=68×(48+2)
=68×50
=3400
(50)5×27+63×5
=5×(27+63)
=5×100=500
(51)12×(40-5)
=12×40-12×5
=480-60
=420
(52)64×9-14×9
=(64-14)×9
=50×9=450
(53)35×98
=35×(100-2)
=35×100-35×2
=3500-70
=3430
(54)23×134-34×23
=23×(134-34)
=23×100=2300
(55)102×45
=(100+2)×45
=100×45+2×45
=4500+90
=4590
(56)648+203
=648+2+201
=650+201=851
(57)98×32
=(100-2)×32
=100×32-2×32
=3200-64
=3136
(58)44×25
=11×4×25
=11×100=1100
(59)63+15×2
=63+30=93
(60)43+43×39
=43×(1+39)
=43×40
=1720
(61)27×37+37×23
=(27+23)×37
=50×37
=1850
(62)256×7-56×7
=(256-56)×7
=200×7
=1400
(63)48×101-48
=48×(101-1)
=48×100
=4800
(64)99×62+62
=(99+1)×62
=100×62=6200
(65)41×99
=41×(100-1)
=41×100-41×1
=4100-41
=4059
(66)765+98
=765+100-2
=863
(67)560÷16
=560÷(4×4)
=560÷4÷4
=140÷4
=35
(68)201×34
=(200+1)×34
=200×34+1×34
=6800+34
=6834
(69)36×25
=9×4×25
=9×100=900
(70)304+297
=301+3+197
=501
(71)18×45+18×55
=(45+55)×18
=100×18
=1800
(72)226×13-26×13
=(226-26)×13
=200×13
=2600
(73)15×301-15
=15×(301-1)
=15×300
=4500
(74)(30+8)×25
=30×25+8×25
=750+200=950
(75)25×65+25×25
=25×(65+25)
=25×100
=2500
(76)75×141-75×40
=75×(141-40)
=75×101
=7575
(77)125×18
=125×(10+8)
=125×10+125×8
=1250+1000
=2250
(78)25×35+25
=25×(35+1)
=25×36
=25×4×9
=900
(79)71×23-71×13
=71×(23-13)
=710
(80)125×(80-8)
=125×80-125×8
=10000-1000
=9000
(81)101×89-89
=(101-1)×89
=8900
(82)88×22+22×12
=(88+12)×22
=2200
(83)28×57+43×28
=28×(57+43)
=2800
(84)202×41
=(200+2)×41
=200×41+2×41
=8200+82
=8282
(85)25×19×4
=25×4×19
=1900
(86)47×99+47
=47×(99+1)
=47×100
=4700
(87)103×37
=(100+3)×37
=100×37+3×37
=3700+111
=3811
(88)34×201
=34×(200+1)
=34×200+34×1
=6800+68=6868
(89)25×5×16
=25×4×(4×5)
=100×20=2000
(90)56+56×49
=56×(49+1)
=56×50
=2830
(91)57×26+26×43
=(57+43)×26
=100×26
=3600
(92)373×9-73×9
=(373-73)×9
=300×9
=2700
(93)78×101-78
=78×(101-1)
=7800
(94)199×53+53
=(199+1)×53
=10600
(95)25×124-24×25
=25×(124-24)
=2500
(96)250×28
=250×4×7
=1000×7
=7000
(97)125×16
=125×8×2
=1000×2
=2000
(98)250×9×4
=250×4×9
=1000×9
=9000
(99)48×125
=6×(8×125)
=6000
(100)24×250
=6×(4×250)
=6000
(101)402×15
=(400+2)×15
=400×15+2×15
=6000+30
=6030
(102)(25+250)×4
=25×4+250×4
=100+1000
=1100
(103)199×9+199
=199×(9+1)
=1990
(104)27×18+82×27
=27×(18+82)
=2700
(105)2×46+46×18
=46×(18+2)
=46×20
=920
(106)401×25
=(400+1)×25
=400×25+1×25
=10000+25
=10025
(107)72×101
=72×(100+1)
=72×100+72×1
=7200+72
=7272
(108)42×(30-1)
=42×30-42×1
=1260-42
=1218
(109)101×85-85
=(101-1)×85
=8500
(110)25×19
=25×(20-1)
=25×20-25
=500-25
=475
(111)152×49+51×152
=152×(49+51)
=152×100
=15200
(112)50×(60+8)
=50×60+50×8
=3000+400
=3400
(113)93×99+93
=93×(99+1)
=9300
(114)13×125×8
=13×(125×8)
=13000
(115)125×17+63×125
=125×(17+63)
=125×80
=10000
(116)492-145-155
=492-(145+155)
=492-300
=192
(117)43×25×2
=43×(25×2)
=43×50
=2150
(118)24×25
=6×(4×25)
=600
(119)28×111-28×11
=28×(111-11)
=2800
(120)63×8+91×63+63
=63×(8+91+1)=6300