1.3*0.4-1.2*0.4怎么简算?

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1.3*0.4-1.2*0.4怎么简算?1.3*0.4-1.2*0.4怎么简算?1.3*0.4-1.2*0.4怎么简算?1.3×0.4-1.2×0.4=(1.3-1.2)×0.4=1.1×0.4=0.

1.3*0.4-1.2*0.4怎么简算?
1.3*0.4-1.2*0.4怎么简算?

1.3*0.4-1.2*0.4怎么简算?
1.3×0.4-1.2×0.4
=(1.3-1.2)×0.4
=1.1×0.4
=0.44