问题 解答题
1.3×5=3×5.1=2.1×0.3=
0.12×6=0.2×0.38=0.3×1.5=
200×0.05=0.1×0.01=0.65×10=
答案

1.3×5=6.53×5.1=15.32.1×0.3=0.63
0.12×6=0.720.2×0.38=0.0760.3×1.5=0.45
200×0.05=100.1×0.01=0.0010.65×10=6.5

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