六年级上册分数简便运算专项
-
简介
添“1”法 25×32+25×67+25 =25×(32+67+1) =25×100 =40 29−716×29 =29×(1−716) =29×916 =18 920×101−920 =920×(101−1) =920×100 =45 225×99+225 =225×(99+1) =225×100 =240 58×79+58 =58×(79+1) =58×80 =50 12×1511+711×12−12 =12×(1511+711−1) =12×1 =12
本年级热门下载
同类热门下载