Question

简便运算：① 9.8÷14 ②（6.4＋3.2）÷8 ③ 35÷（0.35×4） ④ 63.2×0.1＋6.32×9

请列简便运算！我可以给20悬赏分！！O(∩_∩)O谢谢了啦~~帮个忙。\(^o^)/~

Answer 1

① 9.8÷14=0.7×14÷14=0.7
②（6.4＋3.2）÷8 =6.4÷8+3.2÷8=0.8×8÷8+0.4×8÷8=0.8+0.4=1.2
③ 35÷（0.35×4）=35÷0.35÷4=100÷4=25×4÷4=25
④ 63.2×0.1＋6.32×9= 63.2×0.1＋63.2×0.9=63.2×(0.1+0.9)==63.2

Answer 2

① 9.8÷14
=9.8÷2÷7
=0.7

②（6.4＋3.2）÷8
=6.4÷8+3.2÷8
=0.8+0.4
=1.2

③ 35÷（0.35×4）
=35÷0.35÷4
=100÷4
=25

④ 63.2×0.1＋6.32×9
= 63.2×0.1＋63.2×0.9
=63.2×(0.1+0.9)
=63.2

Answer 3

化成分数就可以了~答案不费话了，上面有
1:1.4×0.7÷14
2:1/10（64+32）÷8（括号2项先除8再除10）
3：直接拆括号。。。。不用废话吧？
4：=6.32×1+6.32×9=6.32×（9+1）=6.32×10

Answer 4

0.7 1.2 400 63.2

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请列简便运算！我可以给20悬赏分！！O(∩_∩)O谢谢了啦~~帮个忙。\(^o^)/~