详解200题四年级上下册数学简便计算题文档格式.docx

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详解200题四年级上下册数学简便计算题文档格式.docx

(5×

2)

=230

25×

4

=25×

9

(125×

13)

=8×

125×

13

=13000

(250×

125)×

8)

=125×

4)

=1000000

88×

125

11

=11000

42×

=42×

=210000

72×

=9000

64×

25

(25×

=200000

=100×

(8×

=1100000

第四类:

(12+5)×

40

=12×

40+5×

=680

(40-4)

40-125×

=5400

76×

103

=76×

(100+3)

=7828

=2×

21

=1050

18×

=(10+8)×

=10×

125+8×

125=2250

44

=110

99×

78

=(100-1)×

78-1×

78=7722

=900-9=891

第五类:

37+37×

55

=37×

+(45+55)

=3700

28×

21+28×

79

=28×

(21+79)

=2800

17×

23-23×

7

(17-7)

38×

46+64×

38

=38×

(46+64)

110

(100+10)

=4180

32+32

=32×

(99+1)

=3200

46+46×

59

=46×

(59+1)

=2760

167×

2+167×

3+167×

=167×

(2+3+5)

=1670

39×

8+6×

39-39×

=39×

(8+6-4)

=390

225-2×

225-6×

225

=225×

(28-2-6)

=4500

(42+25)×

125+(18+15)×

(42+18+25+15)

=12500

4+25×

2+27×

8+25×

1

23+25×

8+27×

8

(23+25+27+25)

=800

22+33×

34

=33×

(66+34)

=3300

第六类:

除法简便计算题

250÷

=250÷

=25

360÷

=360÷

9)

=10

600÷

12÷

=600÷

(12×

800÷

=800÷

=20

480÷

48

=480÷

48÷

=2

240÷

12

=240÷

=4

420÷

35

=420÷

=12

2400÷

=2400÷

=96

7800÷

=7800÷

=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÷

=960÷

48×

46

=920

3702×

38÷

1234

=1234×

=114

99000÷

121×

=99000÷

(121÷

11)

640÷

(16÷

=640÷

16×

=160

1000÷

(125÷

=1000÷

=32

第九类:

加减乘除

(98+147)÷

49

=98÷

49+147÷

=5

(230-23)÷

23

=230÷

23-23÷

=9

(250-25)÷

25-25÷

1736÷

28+1064÷

28

=(1736+1064)÷

(860+240÷

12)

880

=110000

700+612÷

12×

=700+612÷

=700+204

=904

(37+15)×

85+1360

=(50+2)×

=50×

85+2×

=4250+170+1360

=5610+170=5780

2005×

20062006-2006×

20052005

=2005×

2006×

10001-2006×

10001

=0

(42×

11×

125)

(12+50)×

40+50×

=86×

86×

100+86×

3

=8858

10+125×

=2250

=1100

9-9

=91

=78×

100-78

=7722

38+38×

=(45+55)×

=3800

=(21+79)×

=7900

37×

=(37-7)×

=690

=(46+64)×

=(99+1)×

32

=(59+1)×

=(2+3+5)×

167

=(8+6-4)×

39

=(28-2-6)×

=2500

=[(42+18)+(25+15)]×

=258-68

=190

=253

=250×

13)×

=11×

=9×

25)

=100000

=2480

100+3×

76

(40+4)

40+25×

=(40+2)×

=40×

25+2×

100-9

=891

=7800-78

37

=(17-7)×

=110×

10+38×

100

=(10+100)×

360-4-9

=360-(4×

0.18+4.26一0.18十4.26

=4.26+4.26+(0.18-0.18)

=8.52

8100÷

75

=(81×

100)÷

3)

=81÷

(100÷

16800÷

120

=(12000+4800)÷

=140

1248÷

24

=1248÷

=52

3150÷

15

=3150÷

=210

(10000-1000-100-10)÷

10

=10000÷

10-1000÷

10-100÷

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)÷

=99

10-0.432-2.568

=10-(0.432+2.568)

=7

98×

199

=98×

(200-1)

=19502

6.8×

0.04

0.04×

6.8

=6.8

355+260+140+245

=355+245+(260+140)

=1000

102×

99

=99×

(100+2)

=10098

=250

645-180-245

=645-245-180

=4000

(40+6)

=1150

382×

101-382

=382×

(101-1)

=38200

101×

56

=(100+1)×

=5656

26

=2574

1022-478-422

=1022-(478+422)

=122

60×

50×

=4×

(60×

=96000

930÷

0.6÷

=930÷

(0.6×

=310

63.4÷

2.5÷

0.4

=63.4÷

(2.5×

0.4)

=63.4

2357-183-317-357

=2357-357-(183+317)

=1500

=672-36-36+36+64

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

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

=8900

3999+498

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

=4000+500-1-2

=4497

568-(68+178)

=568-68-178

=322

225+225×

=(88+12)×

=22500

698-291一9

=698-(291+9)

=398

382+165+35-82

=382-82+(165+35)

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×

(99+2)

100+75×

=7575

216+89+11

=216+(89+11)

=316

=600-(12×

117+392+608

=117+(392+608)

=1117

27+27×

27

=2700

87×

53+87×

47

=(53+47)×

87

=8700

75-7×

=(75-25)×

=350

234—6634

=234-34-66

=134

528—53-47

=528-(53+47)

=428

435-(135+189)

=435-135-189

=111

25+32×

25+25

=(167+32+1)×

=5000

99+38

147+147×

147

=14700

(4+8)

4+8×

=300

108×

=(100+8)×

=8100

35×

201

=35×

(200+1)

=7035

98

(100-2)

=7350

6

=12000

32×

88

=600

3500-4-25

=3500-(4×

=35

35÷

(35×

=60

30+255+70

=30+70+255

=355

282+41+159

=282+(41+159)

=482

6.3÷

1.8

=6.3÷

0.9÷

=3.5

64+125×

36

=(64+36)×

199+64

=64×

(199+1)

=12800

528-53-47

158+395+105

=158+(395+105)

=658

(13×

6)÷

6)

=13×

(8÷

4)×

(5÷

5)×

(6÷

=26

2.1×

99+2.1

=2.1×

4800÷

=48×

100÷

=192

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