好私服

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

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

一道难题，求学霸指点，谢谢