7.3×4.5-4.5 5.9×10.1 这两道题用简便运算怎么算?
问题描述:
7.3×4.5-4.5 5.9×10.1 这两道题用简便运算怎么算?
请快速解答,一天内.
答
7.3×4.5-4.5
=(7.3-1)×4.5
=6.3×4.5
=28.35
5.9×10.1
=5.9×10+5.9×0.1
=59+0.59
=59.59