6.15-(2.97+1.75)简便运算
问题描述：
6.15-(2.97+1.75)简便运算
写错了，是6.25
答
6.15-(2.97+1.75)
=6.15-3+0.03-1.15-0.6
=6.15-1.15-3+0.03
=5-3+0.03
=2.03