详解200题四年级上下册数学简便计算题.docx

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详解200题四年级上下册数学简便计算题.docx

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详解200题四年级上下册数学简便计算题.docx

详解200题四年级上下册数学简便计算题

数学简便计算题

 

第一类:

加法简便计算题

357+288+143

=357+143+288

=788

65+73+135

=65+135+73

=273

272+68+28

=272+28+68

=368

129+235+171+165

=129+171+(235+165)

=700

17+145+23+35

=17+23+(145+35)

=220

999+99+9+3

=(998+2)+(9+1)

=1110

6+7+8+102+103+104

=102+8+(7+103)+(6+104)

=330

9998+3+99+998+3+9

=9998+2+(99+1)+999+1+(99+1)+(9+1)

=11110

第二类:

减法简便计算题

400-256-44

=400-(256+44)

=100

517-53-47

=517-(53+47)

=417

284-159-41

=284-(159+41)

=84

545-167-145

=545-145-167

=233

478-47-178

=478-178-47

=233

344-(144+37)

=344-144-37

=163

236-(177+36)

=236-36-177

=23

258-42-16

=258-(42+16)

=200

 

第三类:

乘法简便计算题

45×4×5

=45×(4×5)

=900

23×5×2

=23×(5×2)

=230

25×9×4

=25×4×9

=900

8×(125×13)

=8×125×13

=13000

(250×125)×(4×8)

=125×8×(250×4)

=1000000

88×125

=8×125×11

=11000

42×125×8×5

=42×5×(125×8)

=210000

72×125

=8×125×9

=9000

125×64×25

=125×8×(25×8)

=200000

25×4×88×125

=100×(8×125)×11

=1100000

第四类:

乘法简便计算题

(12+5)×40

=12×40+5×40

=680

125×(40-4)

=125×40-125×4

=5400

76×103

=76×(100+3)

=7828

42×25

=2×25×21

=1050

18×125

=(10+8)×125

=10×125+8×125=2250

25×44

=25×4×11

=110

99×78

=(100-1)×78

=100×78-1×78=7722

99×9

=(100-1)×9

=900-9=891

 

第五类:

乘法简便计算题

45×37+37×55

=37×+(45+55)

=3700

28×21+28×79

=28×(21+79)

=2800

17×23-23×7

=23×(17-7)

=230

38×46+64×38

=38×(46+64)

=38×110

=38×(100+10)

=4180

99×32+32

=32×(99+1)

=3200

46+46×59

=46×(59+1)

=2760

167×2+167×3+167×5

=167×(2+3+5)

=1670

39×8+6×39-39×4

=39×(8+6-4)

=390

28×225-2×225-6×225

=225×(28-2-6)

=4500

(42+25)×125+(18+15)×125

=125×(42+18+25+15)

=12500

23×2×4+25×4×2+27×1×8+25×8×1

=8×23+25×8+27×8+25×8

=8×(23+25+27+25)

=800

99×22+33×34

=33×3×22+33×34

=33×(66+34)

=3300

第六类:

除法简便计算题

250÷5÷2

=250÷(5×2)

=25

360÷4÷9

=360÷(4×9)

=10

600÷12÷5

=600÷(12×5)

=10

800÷5÷8

=800÷8÷5

=20

480÷5÷48

=480÷48÷5

=2

240÷5÷12

=240÷12÷5

=4

420÷35

=420÷7÷5

=12

2400÷25

=2400÷5÷5

=96

7800÷12

=7800÷6÷2

=650

第七类:

加减综合简便计算题

92+99

=92+(100-1)

=92+100-1

=191

197+102

=197+(100+2)

=197+100+2

=299

354-108

=354-(100+8)

=354-100-8

=246

323+189-123

=323-123+189

=389

405-99

=405-(100-1)

=405-100+1

=306

127-98

=127-(100-2)

=127-100+2

=29

672-36+64

=672-(36+64)

=572

248+86-48

=248-48+86

=286

(6467-832)+(1832-1467)

=6467-1467+(1832-832)

=6000

1530+(592-530)-192

=1530-530+(592-192)

=1400

(2+4+6+…+98+100)-(1+3+5+…+97+99)

=(2-1)+(4-3)+…+(98-97)+(100-99)

=1+1+..+1+1

=50

 

第八类:

乘除综合简便计算题

960×46÷48

=960÷48×46

=920

3702×38÷1234

=1234×3×38÷1234

=114

99000÷121×11

=99000÷(121÷11)

=9000

640÷(16÷4)

=640÷16×4

=160

1000÷(125÷4)

=1000÷125×4

=32

第九类:

加减乘除

(98+147)÷49

=98÷49+147÷49

=5

(230-23)÷23

=230÷23-23÷23

=9

(250-25)÷25

=250÷25-25÷25

=9

1736÷28+1064÷28

=(1736+1064)÷28

=100

125×(860+240÷12)

=125×880

=125×8×110

=110000

700+612÷12×4

=700+612÷3÷4×4

=700+204

=904

(37+15)×85+1360

=(50+2)×85+1360

=50×85+2×85+1360

=4250+170+1360

=5610+170=5780

2005×20062006-2006×20052005

=2005×2006×10001-2006×2005×10001

=0

42×125×8×5

=125×8×(42×5)

=210000

25×4×88×125

=25×4×11×(8×125)

=1100000

(12+50)×40

=12×40+50×40

=680

125×(40-4)

=125×40-125×4

=86×(100+3)

86×103

=86×100+86×3

=8858

18×125

=(10+8)×125

=125×10+125×8

=2250

25×44

=25×4×11

=1100

42×25

=2×25×21

=1050

99×9

=(100-1)×9

=100×9-9

=91

99×78

=(100-1)×78

=78×100-78

=7722

45×38+38×55

=(45+55)×38

=3800

28×21+28×79

=(21+79)×79

=7900

37×23-23×7

=(37-7)×23

=690

38×46+64×38

=(46+64)×38

=3800

99×32+32

=(99+1)×32

=3200

46+46×59

=(59+1)×46

=2760

167×2+167×3+167×5

=(2+3+5)×167

=1670

39×8+6×39-39×4

=(8+6-4)×39

=390

28×225-2×225-6×225

=(28-2-6)×225

=2500

(42+25)×125+(18+15)×125

=[(42+18)+(25+15)]×125

=12500

65+73+135

=65+135+73

=273

357+288+143

=357+143+288

=788

272+68+28

=272+28+68

=368

129+235+171+165

=129+171+(235+165)

=700

17+145+23+35

=17+23+(145+35)

=220

400-256-44

=400-(256+44)

=100

517-53-47

=517-(53+47)

=417

284-159-41

=284-(159+41)

=84

258-42-16

=258-(42+16)

=258-68

=190

545-167-145

=545-145-167

=233

478-47-178

=478-178-47

=253

344-(144+37)

=344-144-37

=163

236-(177+36)

=236-36-177

=23

45×4×5

=45×(4×5)

=900

23×5×2

=23×(5×2)

=230

25×9×4

=25×4×9

=900

(250×125)×(4×8)

=250×4×(125×8)

=1000000

(125×13)×8

=8×125×13

=13000

88×125

=11×(8×125)

=11000

72×125

=9×(8×125)

=9000

125×64×25

=125×8×(8×25)

=100000

42×125×8×5

=42×5×(8×125)

=210000

25×4×88×125

=100×11×(8×125)

=1100000

(12+50)×40

=12×40+50×40

=2480

125×(40-4)

=125×40-125×4

=4500

76×103

=76×(100+3)

=76×100+3×76

=7828

18×125

=(10+8)×125

=10×125+8×125

=2250

25×44

=25×(40+4)

=25×40+25×4

=1100

42×25

=(40+2)×25

=40×25+2×25

=1050

99×9

=(100-1)×9

=9×100-9

=891

99×78

=(100-1)×78

=7800-78

=7722

45×37+37×55

=(45+55)×37

=3700

28×21+28×79

=(21+79)×28

=2800

 

17×23-23×7

=(17-7)×23

=230

38×46+64×38

=(46+64)×38

=110×38

=38×10+38×100

=(10+100)×38

=4180

99×32+32

=(99+1)×32

=3200

46+46×59

=(59+1)×46

=2760

167×2+167×3+167×5

=(2+3+5)×167

=1670

39×8+6×39-39×4

=(8+6-4)×39

=390

360-4-9

=360-(4×9)

=10

250÷5÷2

=250÷(5×2)

=25

 

0.18+4.26一0.18十4.26

=4.26+4.26+(0.18-0.18)

=8.52

8100÷4÷75

=(81×100)÷4÷(25×3)

=81÷3×(100÷4÷25)

16800÷120

=(12000+4800)÷120

=140

1248÷24

=1248÷12÷2

=52

3150÷15

=3150÷5÷3

=210

(10000-1000-100-10)÷10

=10000÷10-1000÷10-100÷10-10÷10

=1000-(100+10+1)

=889

138+293+62+107

=138+62+(293+107)

=500

99+999+9999+99999

=(99+1)+(999+1)+(9999+1)+(99999+1)-4

=111096

66.86-8.66-1.34

=66.88-(8.66+1.34)

=56.88

8811÷89

=(8900-89)÷89

=99

10-0.432-2.568

=10-(0.432+2.568)

=7

98×199

=98×(200-1)

=19502

25×6.8×0.04

=25×0.04×6.8

=6.8

355+260+140+245

=355+245+(260+140)

=1000

102×99

=99×(100+2)

=10098

2×125

=2×5×25

=250

645-180-245

=645-245-180

=220

125×32

=125×8×4

=4000

25×46

=25×(40+6)

=1150

382×101-382

=382×(101-1)

=38200

101×56

=(100+1)×56

=5656

99×26

=(100-1)×26

=2574

1022-478-422

=1022-(478+422)

=122

4×60×50×8

=4×50×(60×8)

=96000

930÷0.6÷5

=930÷(0.6×5)

=310

63.4÷2.5÷0.4

=63.4÷(2.5×0.4)

=63.4

2357-183-317-357

=2357-357-(183+317)

=1500

672-36+64

=672-36-36+36+64

=(672-72)+(36+64)

=700

36-64-36+64

=(36-36)+(64+64)

=128

500-257-34-143

=500-(257+34)-143

=57

755-287+87

=755-(287-87)

=555

1814-378一422

=1814-(378+422)

=1014

89×99+89

=(99+1)×89

=8900

3999+498

=(4000-1)+(500-2)

=4000+500-1-2

=4497

568-(68+178)

=568-68-178

=322

88×225+225×12

=(88+12)×225

=22500

698-291一9

=698-(291+9)

=398

382+165+35-82

=382-82+(165+35)

=500

155+256+45-98

=(155+45)+256-(100-2)

=200+256-100+2

=358

759-126-259

=759-259-126

=374

75×99+2×75

=75×(99+2)

=75×100+75×1

=7575

216+89+11

=216+(89+11)

=316

600÷(12×5)

=600-(12×5)

=10

800÷5÷8

=800÷8÷5

=20

480÷5÷48

=480÷48÷5

=2

420÷35

=420÷7÷5

=12

240÷5÷12

=240÷12÷5

=4

117+392+608

=117+(392+608)

=1117

88×27+27×12

=(88+12)×27

=2700

87×53+87×47

=(53+47)×87

=8700

7×75-7×25

=(75-25)×7

=350

234—6634

=234-34-66

=134

528—53-47

=528-(53+47)

=428

435-(135+189)

=435-135-189

=111

167×25+32×25+25

=(167+32+1)×25

=5000

38×99+38

=(99+1)×38

=3800

147+147×99

=(99+1)×147

=14700

25×(4+8)

=25×4+8×25

=300

108×75

=(100+8)×75

=8100

35×201

=35×(200+1)

=7035

75×98

=75×(100-2)

=7350

2×125×8×6

=2×6×(125×8)

=12000

25×32×125

=25×4×(8×125)

=100000

25×7×4

=25×4×7

=700

125×88

=25×8×11

=11000

25×48

=25×8×6

=600

3500-4-25

=3500-(4×25)

=35

420÷35÷2

=420÷(35×2)

=60

30+255+70

=30+70+255

=355

282+41+159

=282+(41+159)

=482

88×27+27×12

=(88+12)×27

=2700

6.3÷1.8

=6.3÷0.9÷2

=3.5

125×64+125×36

=(64+36)×125

=12500

64×199+64

=64×(199+1)

=12800

528-53-47

=528-(53+47)

=428

158+395+105

=158+(395+105)

=658

(13×8×5×6)÷(4×5×6)

=13×(8÷4)×(5÷5)×(6÷6)

=26

2.1×99+2.1

=2.1×(99+1)

=210

4800÷25

=48×100÷25

=48×4

=192

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