65ᘧ࿾30锧360ᘧ࿾3阧30简便方法?

2024-11-16 05:29:35
推荐回答(3个)
回答1:

65✖️30➕360✖️3➖30

=65×30+36×30-30×1...............根据积的变化规律改写

=30×(65+36-1)................乘法的分配律

=30×100

=3000

回答2:

65×30+360×3-30
=65×30+36×30-30
=(65+36-1)×30
=100×30
=3000

回答3:

65*30+360*3-30
=65*30+36*30-30
=30*(65+36-1)
=30*100
=3000