1.25×2.4 简算

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1.25×2.4 简算
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1.25×2.4 简算
1.25×2.4 简算

1.25×2.4 简算
1.25×2.4
=1.25×8×0.3
=10×0.3
=3

1.25*2.4=1.25*8*0.3=10*0.3=3

1.25*0.3*8
=1.25*8*0.3
=10*0.3
=3

1.25×(2+0.4)=2.5+0.5=3

1.25*2.4=1.25*8*2.4/8=10*0.3=3