(8.6+8.6+8.6+8.6×5)×12.5简便运算
问题描述:
(8.6+8.6+8.6+8.6×5)×12.5简便运算
答
原式=[8.6×(1+1+1+5)]×12.5
=8.6×8×12.5
=8.6×(8×12.5)
=8.6×100
=860