42乘64加42乘26简便方法计算

2025-04-04 19:08:03
推荐回答(2个)
回答1:

42*64+42*26
=42*(64+26)
=42*90
=40*90+2*90
=3600+180
=3780

回答2:

42×64+42×26
=42×(64+26)
=42×90
=3780