问题 解答题
口算.
0.4×0.25=
3.2÷0.8=1.25×7×0.8=1÷8=
0.2×0.9+0.6×0.2=6.2÷0.62=2-2÷5=1-0.08=
0.5×0.1÷0.5×0.1=0.01÷0.001×0.1=
答案

0.4×0.25=0.13.2÷0.8=41.25×7×0.8=71÷8=0.125
0.2×0.9+0.6×0.2=0.36.2÷0.62=102-2÷5=1.61-0.08=0.92
0.5×0.1÷0.5×0.1=0.010.01÷0.001×0.1=1

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