来自杜军君的问题
12.8乘34.5加12.8乘12.3加46.8乘87.2=?简便运算
12.8乘34.5加12.8乘12.3加46.8乘87.2=?简便运算
1回答
2020-11-1006:04
12.8乘34.5加12.8乘12.3加46.8乘87.2=?简便运算
12.8乘34.5加12.8乘12.3加46.8乘87.2=?简便运算
12.8*34.5+12.8*12.3+46.8*87.2=12.8*(34.5+12.3)+46.8*87.2=12.8*46.8+46.8*87.2=46.8*(12.8+87.2)=4680