问题 解答题
口算下面各题.
0.5×1.2=
1.25×0.8=0.16×0.5=
0.25×4=3.2×0.5=0.2×50=
1.1×0.1=1.7×0.03=2.4×0.5=
0.12×7=
答案

0.5×1.2=0.6,1.25×0.8=1,0.16×0.5=0.08,
0.25×4=1,3.2×0.5=1.5,0.2×50=10,
1.1×0.1=0.11,1.7×0.03=0.051,2.4×0.5=1.2,
0.12×7=0.84.

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