题目内容
口算下面各题 72+28= |
25×4= | 12×
| ||||||
1-0.625= |
|
4.3÷0.1= | ||||||
630÷70= |
分析:按运算法则计算.
解答:解:72+28=100 25×4=100 12×
= 4
÷
=
1-0.625=0.375
-
=
4.3÷0.1=43 630÷70=9
故填:100;100;4;
;0.375;
;43;9.
1 |
3 |
5 |
8 |
3 |
5 |
25 |
24 |
1-0.625=0.375
3 |
5 |
1 |
5 |
2 |
5 |
故填:100;100;4;
25 |
24 |
2 |
5 |
点评:
÷
=较容易错,要注意.
5 |
8 |
3 |
5 |
练习册系列答案
相关题目