777*9+111+3用简便方法计算

问题描述:

777*9+111+3用简便方法计算

777 X 9 + 111 + 3
= 111 X 7 X 9 + 111 + 3
= 111 X 63 + 111 + 3
= 111 X 64 + 3
= 7104 + 3
= 7107