8.56-3.7+1.35-6.3 简便计算
问题描述:
8.56-3.7+1.35-6.3 简便计算
答
8.56-3.7+1.35-6.3
=8.56+1.35-3.7-6.3
=8.56+1.34+0.01-10
=9.9+0.01-10
=-0.09