5.31×8.7+53.1×0.13怎么简算?
问题描述:
5.31×8.7+53.1×0.13怎么简算?
答
5.31×8.7+53.1×0.13
=5.31×8.7+5.31×1.3
=5.31×(8.7+1.3)
=5.31×10
=53.1