简便计算:(20+2)×7×5
问题描述:
简便计算:(20+2)×7×5
答
(20+2)*7*5
=20*7*5+2*7*5
=700+70
=770
简便计算:(20+2)×7×5
(20+2)*7*5
=20*7*5+2*7*5
=700+70
=770