简便运算 3.14×11/8 +0.314×25/4 -31.4×0.2
问题描述:
简便运算 3.14×11/8 +0.314×25/4 -31.4×0.2
答
简便运算
3.14×11/8 +0.314×25/4 -31.4×0.2
=3.14×11/8 +3.14×5/8 -3.14×2
=3.14×(11/8+5/8-2)
=3.14×0
=0