68×31用简便方法计算?

2025-03-22 13:36:13
推荐回答(2个)
回答1:

简便计算
68×31
=68x30+68x1
=2040+68
=2108

回答2:

68x31=68x(30+1)
=68x30+68
=2040+68
2108