12.3*6.7+7.7*6.7用简便方法计算怎么算?
问题描述:
12.3*6.7+7.7*6.7用简便方法计算怎么算?
答
12.3×6.7+7.7×6.7
=(12.3+7.7)×6.7
=30×6.7
=201