543*36 117*36 6的简便运算
解:543×36 117×36 6 =(543 117)×36 6 =660×36 6 =(700-40)×(40-4) 6 =700×40-700×4-40×40 40×4 6 =2'8000-2800-1600 160 6 =2'8000-(2800 1600) (160 6) =2'8000-4400 166 =2'3600 166 =23766。
解:543×36 117×36 6 =(543 117)×36 6 =660×36 6 =(700-40)×(40-4) 6 =700×40-700×4-40×40 40×4 6 =2'8000-2800-1600 160 6 =2'8000-(2800 1600) (160 6) =2'8000-4400 166 =2'3600 166 =23766。
收起