4.2除35简便运算!

4.2除35
=35÷ 4.2
=35 ÷ 42 x 10
=5/6 x 10
=50 /6
=3分之25我是小学四年级！4.2除以35= 4.2 ÷ 35= 0.6 x 7 ÷ ( 5 x 7 )= 0.6 ÷ 5= 0. 12可否再问集题？先采纳了。。。再另外问，我要分开答题。。采纳数不够了= = 不要悬赏破