79Xl6十78+79╳6简便方法怎么计算

2024-12-31 04:04:28
推荐回答(1个)
回答1:

79Xl6十78+79╳6
=79x(16+6)+78
=79x22+78
=79x21+(22+78)
=79x20+79+100
=1580+179
=1580+200-21
=1759