问题标题:
【计算:3.68×15.7-31.4+15.7×0.32=______.】
问题描述:
计算:3.68×15.7-31.4+15.7×0.32=______.
李润霞回答:
3.68×15.7-31.4+15.7×0.32
=15.7×(3.68+0.32)-31.4
=15.7×4-31.4
=31.4×2-31.4
=31.4
故答案为31.4
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