10.75+0.4-9.86简便计算
问题描述:
10.75+0.4-9.86简便计算
答
10.75+0.4-9.86
=10.75+0.4-(10-0.14)
=10.75+0.4-10+0.14
=(10.75-10)+(0.4+0.14)
=0.75+0.54
=1.29