15.9×0.5-5×0.59的简便运算是怎样的?
问题描述:
15.9×0.5-5×0.59的简便运算是怎样的?
答
15.9×0.5-5×0.59
=15.9×0.5-0.5×5.9
=(15.9-5.9)x0.5
=10x0.5
=5