(6.2×6.8+1.8×6.8)×1.25简便运算
问题描述:
(6.2×6.8+1.8×6.8)×1.25简便运算
答
(6.2×6.8+1.8×6.8)×1.25
=6.8x (6.2+1.8)x1.25
= 6.8x8x1.25
=6.8x10
=68