0.79 ×0.46+7.9 ×0.24+11.4×0.079 怎样算简便

问答/112℃/2024-02-22 11:40:03

优质解答：

0.79×0.46+7.9×0.24+11.4×0.079

=0.79×0.46+0.79×2.4+1.14×0.79

=0.79×（0.46+2.4+1.14）

=0.79×4

=3.16

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