4.02+3.5-0.98简便计算
问题描述:
4.02+3.5-0.98简便计算
答
4.02+3.5-0.98
=4+0.02+3+0.5-0.98
=(4+3)+(0.02+0.5-0.98)
=7-0.46
=6.54