7.28-(0.8+3.28)简便算法
问题描述:
7.28-(0.8+3.28)简便算法
答
7.28-(0.8+3.28)
= 7.28 - 0.8 - 3.28
= 7.28 - 3.28 - 0.8
= 4 - 0.8
= 3.2