题目内容
直接写出得数
3×
|
|
18÷
|
| ||||||||||||||
|
|
|
1÷
|
分析:①⑥约分即可;②③⑦把除法改为乘法,约分即可;④0乘任何数都得0;⑤通分计算;⑧先算除法,再算减法.
解答:解:3×
=
;
÷
=
; 18÷
=20;
×
×0=0;
+
=
;
×
=
;
÷10=
; 1÷
-
÷1=
.
故答案为:
,
,20,0,
,
,
,
.
| 4 |
| 9 |
| 4 |
| 3 |
| 2 |
| 7 |
| 3 |
| 4 |
| 8 |
| 21 |
| 9 |
| 10 |
| 8 |
| 7 |
| 5 |
| 32 |
| 1 |
| 6 |
| 1 |
| 4 |
| 5 |
| 12 |
| 3 |
| 4 |
| 7 |
| 12 |
| 7 |
| 16 |
| 5 |
| 8 |
| 1 |
| 16 |
| 2 |
| 5 |
| 2 |
| 5 |
| 21 |
| 10 |
故答案为:
| 4 |
| 3 |
| 8 |
| 21 |
| 5 |
| 12 |
| 7 |
| 16 |
| 1 |
| 16 |
| 21 |
| 10 |
点评:此题考查了分数的四则运算,注意运算方法是解题的关键.
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