用简便方法计算420除以35

2024-11-24 20:37:08
推荐回答(5个)
回答1:

420÷35
=420÷7÷5
=60÷5
=12

回答2:

先约分,同时除以7

回答3:

6乘70除以0.5乘70

回答4:

420÷35=420÷7÷5=60÷5=12

回答5:

=70*6/5/7
=70/7/5*6
=10*/5*6
=2*6
=12