题目内容
直接写得数.
|
8÷0.4= |
| ||||||||
|
|
7-6.38= | ||||||||
|
|
0.22×0.5= | ||||||||
| 10-4.8-3.2= |
分析:不同分母的分数相加减,先通分,再相加减;一个数除以分数,等于乘这个分数的倒数;据此计算即可.
解答:解:
-
=
;
8÷0.4=20;
-
=
;
+
=
;
-
=
;
7-6.38=0.62;
+
=
;
+
=
;
0.22×0.5=0.11;
10-4.8-3.2=2.
| 7 |
| 10 |
| 1 |
| 5 |
| 1 |
| 2 |
8÷0.4=20;
| 1 |
| 3 |
| 5 |
| 24 |
| 1 |
| 8 |
| 5 |
| 7 |
| 5 |
| 14 |
| 15 |
| 14 |
| 5 |
| 9 |
| 2 |
| 5 |
| 7 |
| 45 |
7-6.38=0.62;
| 1 |
| 4 |
| 1 |
| 5 |
| 9 |
| 20 |
| 5 |
| 8 |
| 1 |
| 3 |
| 23 |
| 24 |
0.22×0.5=0.11;
10-4.8-3.2=2.
点评:此题考查了分数的加法和减法、分数除法、小数除法.
练习册系列答案
相关题目