15.58÷8.2-0.72 简便算法
问题描述:
15.58÷8.2-0.72 简便算法
答
15.58÷8.2-0.72
=1.9-0.72
=1.1815.58÷8.2-0.72=1.9x8.2÷8.2-0.72=1.9-0.72=1.18