六年級上冊數學的簡便運算題 人教版)

2021-03-28 00:56:51 字數 6040 閱讀 2970

1樓:快樂水晶蛋

1. 3/7 × 49/9 - 4/3

2. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×3

4. 8× 5/4 + 1/4

5. 6÷ 3/8 – 3/8 ÷6

6. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -( 3/2 + 4/5 )8. 7/8 + ( 1/8 + 1/9 )9. 9 × 5/6 + 5/6

10. 3/4 × 8/9 - 1/3

11. 7 × 5/49 + 3/14

12. 6 ×( 1/2 + 2/3 )

13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/6

15. 9/7 - ( 2/7 – 10/21 )16. 5/9 × 18 – 14 × 2/717.

4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420.

3 × 2/9 + 1/3

21. 5/7 × 3/25 + 3/7

22. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/6

24. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/3

26. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/3

29. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.

50+160÷40 (58+370)÷(64-45)32. 120-144÷18+35

33. 347+45×2-4160÷52

34 (58+37)÷(64-9×5)

35. 95÷(64-45)

36. 178-145÷5×6+42 420+580-64×21÷28

37. 812-700÷(9+31×11)38. 85+14×(14+208÷26)39.(284+16)×(512-8208÷18)40. 120-36×4÷18+35

41.(58+37)÷(64-9×5)

42. ( 6.8-6.

8×0.55)÷8.543.

0.12× 4.8÷0.

12×4.844.(3.

2×1.5+2.5)÷1.

645. 6-1.6÷4= 5.38+7.85-5.3746. 7.2÷0.8-1.2×5

47. 6.5×(4.8-1.2×4)

48. 1 0.15-10.

75×0.4-5.749.

5.8×(3.87-0.

13)+4.2×3.7450.

32.52-(6+9.728÷3.

2)×2.5

2樓:匿名使用者

★1.1035-998 ★2.5076+99★3.

3008+449 ★4.428×25×4★★5.328-189-28 ★★6.

43.2-(3.2-1.

28)★★17.25×2×1.25×4×5×8

★★18.84×0.25+16÷4

二、改錯,下面各題錯在**,請改正。

★★2.5731-(731-525)=5731-731-525=5000-525=4475

答案僅供參考:二、略

六年級上冊數學簡便計算及答案

3樓:楓葉

2.8×4/5+8.2×4/5-4/5

=(2.8+8.2-1)×4/5

=10×4/5

=8你好,本題已解答,如果滿意

請點右下角「採納答案」。

4樓:瀛洲煙雨

0.4×

125×25×0.8

=(0.4×25)×(125×0.8)

=10×100=1000

1.25×(8+10)

=1.25×8+1.25×10

=10+12.5=22.5

9123-(123+8.8)

=9123-123-8.8

=9000-8.8

=8991.2

1.24×8.3+8.3×1.76

=8.3×(1.24+1.76)

=8.3×3=24.9

9999×1001

=9999×(1000+1)

=9999×1000+9999×1

=10008999

14.8×6.3-6.

3×6.5+8.3×3.

7=(14.8-6.5)×6.

3+8.3×3.7=8.

3×6.3+8.3×3.

78.3×(6.3+3.7)

=8.3×10

=831.24+0.78+8.76

=(1.24+8.76)+0.78

=10+0.78

=10.78

933-157-43

=933-(157+43)

=933-200

=733

4821-998

=4821-1000+2

=3823

i32×125×25

=4×8×125×25

=(4×25)×(8×125)

=100×1000

=100000

9048÷268

=(2600+2600+2600+1248)÷26=2600÷26+2600÷26+2600÷26+1248÷269=100+100+100+48

=348

5樓:5皮特

(1)2.64×1.7-2.64×0.7

=2.64×(1.7-0.7)

=2.64×1

=2.64

(2)31.5×1.07-3.15×0.7=3.15×10.7-3.15×0.7

=3.15×(10.7-0.7)

=3.15×10

=31.5

(3)2.7×5.7-2.7+5.3×2.7=2.7×(5.7-1+5.3)

=2.7×10

=27(4)0.625÷0.125×0.8=(0.625×0.8)×8÷(0.128×8)=0.5×8÷1

=4(5)18.6×6.1+3.9×18.6=18.6×(6.1+3.9)

=18.6×10

=186

(6)1.3579+3.5791+5.7913+7.9135+9.1357

=(1+3+5+7+9)×1.1111

=25×1.1111

=27.7775

(7)52.5x2.9+5.45

=5.25x29+5.25+0.2

=5.25×(29+1)+0.2

=5.25×30+0.2

=157.5+0.3

=157.7

(8)0.92x15+0.08x15

=(0.92+0.08)×15

=1×15

=15(9)0.72×1.25×2.5

=0.9×(0.8×1.25)×2.5

=0.9×1×2.5

=2.25

(10)400.6x7-2003x0.4

=200.3x14-200.3x4

=200.3×(14-4)

=200.3×10

=2003

6樓:李洪濤

1.25×32

=1.25 ×8×4

= 10×4=40

7樓:泉赫澹臺依波

34×3.535-3.5×34.34

=34×3.5×1.01-3.5×34×1.01=08+89+899+8999+89999=9+90+900+9000+90000-5=99999-5

=99994

0.67×2.1+0.

018×21+8.5×0.79=0.

67×2.1+0.18×2.

1+8.5×0.79=(0.

67+0.18)×2.1+8.

5×0.79=0.85×2.

1+0.85×7.9

=0.85×(2.1+7.9)

=0.85×10

=8.5

22222.2×9.99999

=22222.2×(10-0.00001)=222222-0.222222

=222221.777778

1997×19961996-1996×19971997=1997×1996×10001-1996×1997×10001=00.02+0.04+0.

06+0.08+……+19.94+19.

96+19.98

=(0.02+19.98)×999÷2

=10×999

=9990

99999×77778+33333×66666=99999×77778+99999×22222=99999×(77778+22222)

=99999×100000

=9999900000

(4又5/6-3又3/4)/(3/14+2/7)=13/12÷1/2

=13/6

=2又1/6

(4.8/1又4/5+3又1/2+7又1/3)*4/9=(2又2/3+7又1/3+3.5)*4/9=(10+3.5)*4/9

=13.5*4/9

=617.2/【(3又2/5-1.25)*2/3】=17.2/【2.15*2/3】

=17.2÷43/3

=1.2

5*5又1/5

=5*5+5*1/5

=25+1

=26(5又2/5-1.8)/[(1.15+13/20)*1又2/3]

=3.6/[1.8*5/3]

=3.6/3

=1.2

3又5/8*5又1/5+5又1/5*6又3/8=5.2*(3又5/8+6又3/8)

=5.2*10

=52[3/4-7/8/(5/6+4/5)]*28=[3/4-7/8÷49/30]*28

=[3/4-15/28]*28

=3/4*28-15/28*28

=21-15

=6(1.25*4/5-0.76)/(1又3/8+1又1/40)=(1-0.76)/2.4

=0.24/2.4

=0.1

[(0.2+1/3)*4.5]/(8又1/20-6.45)=8/15*4.5/1.6

=2.4/1.6

=1.5

x+3又2/3=5

x*9又3/4=7又1/11

x/2/5=10

6又2/3-x=4.25

6.4*1.7+6又2/5*8.3

(4又6/7+1.75)/1又11/14+3又5/62.16-7x=0.06

1/2x-0.5=5又1/2

8.16-1.26/0.3*1.5

=8.16-4.2*1.5

=8.16-6.3

=1.86

8.4*[(1.2+3又1/3)/3.4-1/2]=8.4*[68/16/3.4-1/2]

=8.4*[5/4-1/2]

=8.4*3/4

=6.3

5.8:x=3又1/2:7

3.5x=7*5.8

x=7/3.5*5.8

x=2*5.8

x=11.6

3/10*55-4x=14.5

16.5-4x=14.5

4x=2

x=0.2

19.38-4又7/8-5又1/8

=1.938-(4又7/8+5又1/8)

=19.38-10

=9.38

13又7/13-(6又3/5+3又7/13)=13又7/13-3又7/13-6又3/5=10-6又3/5

=3.4

1又3/4+[2又3/14-(2又3/14-1.875)]/2又1/12

=1又3/4-15/8*12/25

=1又3/4-9/10

=0.85

(9.4-8又2/5)/[(1.1+1/15)*1又7/18]=1/[7/6*25/18]

=1÷175/108

=108/175

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