87ⅹ36-36Ⅹ15 136x28简便计算怎么算?

2024-11-16 18:30:30
推荐回答(2个)
回答1:

87×36-36×15+36×28
=36×(87-15+28)
=36×(72+28)
=36×100
=3600

回答2:

87×36-36×15+36×28
=(87-15+28)×36
=100×36
=3600