37.2×9.9+3.72这道题的简便计算怎么算?请列式.并说出方法
问题描述:
37.2×9.9+3.72这道题的简便计算怎么算?请列式.并说出方法
答
37.2×9.9+3.72
=37.2×9.9+37.2×0.1
=37.2×(9.9+0.1)
=37.2×10
=372