问题 解答题
2.1×0.3=0.56÷7=
2.5×8×0.1=1÷0.25=
0.1×3.9=0.5×2.3×2=
3÷0.1=0.35÷0.35=
1.8+1.2×5=
答案

2.1×0.3=0.630.56÷7=0.08
2.5×8×0.1=21÷0.25=4
0.1×3.9=0.390.5×2.3×2=2.3
3÷0.1=300.35÷0.35=1

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