六年级数学上册人教版脱式计算及答案.docx

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六年级数学上册人教版脱式计算及答案.docx

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六年级数学上册人教版脱式计算及答案.docx

六年级数学上册人教版脱式计算及答案

60×(1/12+1/15+1/4)     

=60×1/12+60×1/15+60×1/4

=5+4+15

=24

 

(5/12-3/8)×72 

=5/12×72-3/8×72

=30-27

=3

 

7/25×4/9+7/25×5/9     

=7/25×(4/9+5/9)

=7/25×1

=7/25

 

6/7-5/24÷7/12     

=6/7-5/24×12/7

=12/14-5/14

=7/14

=1/2

 

[3/4×(7/16-1/4)]÷9/13

=3/4×(7/16-4/16)×13/9

=1/4×3/16×13/3

=13/64

 

2/3-7/8+1/3

=(2/3+1/3)-7/8

=1-7/8

=1/8

 

5/6-(3/7-1/6)

=(5/6+1/6)-3/7

=1-3/7

=4/7

 

1-1/3-2/3

=1-(1/3+2/3)

=1-1

=0

 

1+3/5-1/10

=1+6/10-1/10

=1+1/2

=1又1/2

 

3/8-12/13+5/8

=3/8+5/8-12/13

=1-12/13

=1/13

 

1-(1/2-3/4)

=1+3/4-2/4

=1+1/4

=5/4

 

1-1/2-1/4

=1/2-1/4

=2/4-1/4

=1/4

 

2/7-8/9+5/7

=(2/7+5/7)-8/9

=1-8/9

=1/9

 

2-1/4-3/4

=2-(1/4+3/4)

=2-1

=1

 

1/2-(3/8-1/2)

=1/2+1/2-3/4

=1-3/8

=5/8

 

2.64×1.7-2.64×0.7

=2.64×(1.7-0.7)

=2.64×1

=2.64

 

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

 

2.7×5.7-2.7+5.3×2.7

=2.7×(5.7-1+5.3)

=2.7×10

=27

 

0.625÷0.125×0.8

=(0.625×0.8)×8÷(0.125×8)

=0.5×8÷1

=4

 

18.6×6.1+3.9×18.6

=18.6×(6.1+3.9)

=18.6×10

=186

 

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

 

0.92x15+0.08x15

=(0.92+0.08)×15

=1×15

=15

 

0.72×1.25×2.5

=0.9×(0.8×1.25)×2.5

=0.9×1×2.5

=2.25

 

400.6x7-2003x0.4

=200.3x14-200.3x4

=200.3×(14-4)

=200.3×10

=2003

 

300÷125÷8 

=300÷(125×8) 

=300÷1000 

=0.3 

 

396-96-172-28 

=(396-96)-(172+28) 

=300-200 

=100 

 

125x24 

=125x8x3 

=1000x3 

=3000

 

26x15 

=(20+6)x15 

=20x15+6x15 

=300+90 

=390 

 

25x99x4 

=25x4x99 

=100x99 

=9900 

 

250x32 

=250x4x8 

=1000x8 

=8000 

 

(98+98+98+98)x25 

=4x98x25 

=4x25x98 

=100x98 

=9800

 

3/4÷5/8×3/10        

=3/4×8/5×3/10

=9/5×1/5

=9/25

 

1.25×(8+10)

=1.25×8+1.25×10

=10+12.5

=22.5

 

1.24+0.78+8.76

=(1.24+8.76)+0.78

=10+0.78

=10.78

 

1/2-(4/5-1/2)

=1/2+1/2-4/5

=1-4/5

=1/5

 

4800÷25÷4

=4800÷(25x4)

=4800÷100

=4800÷100

=48

 

2/5-(3/8-3/5)

=2/5+3/5-3/8

=1-3/8

=5/8

 

3/4-(3/7-1/4)

=3/4+1/4-3/7

=1-3/7

=4/7

 

3.2x0.125x2.5

=0.125x8x(0.4x2.5)

=1x1

=1

 

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+8.3×3.7

=8.3×(6.3+3.7)

=8.3×10

=83

 

1.24+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

 

32×125×25

=4×8×125×25

=(4×25)×(8×125)

=100×1000

=100000

 

1.8+18÷1.5-0.5×0.3

=1.8+12-0.15

=13.8-0.15

=13.65

 

6.5×8+3.5×8-47

=52+28-47

=80-47

 

3.7x2.56-2.3

=9.472-2.3

=7.172

 

1.24+0.78+8.76

=(1.24+8.76)+0.78

=10+0.78

=10.78

 

1/2-(4/5-1/2)

=1/2+1/2-4/5

=1-4/5

=1/5

 

4800÷25÷4

=4800÷(25x4)

=4800÷100

=4800÷100

=48

 

2/5-(3/8-3/5)

=2/5+3/5-3/8

=1-3/8

=5/8

 

3/4-(3/7-1/4)

=3/4+1/4-3/7

=1-3/7

=4/7

 

3.2x0.125x2.5

=0.125x8x(0.4x2.5)

=1x1

=1

 

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+8.3×3.7

=8.3×(6.3+3.7)

=8.3×10

=83

 

1.24+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

 

32×125×25

=4×8×125×25

=(4×25)×(8×125)

=100×1000

=100000

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