题目内容
| 5 |
| 9 |
| ( )×( ) |
| ( ) |
| ( ) |
| ( ) |
分析:在计算
×12时,把分子与整数相乘,分母不变,能约分的要约分.据此解答.
| 5 |
| 9 |
解答:解:
×12=
=
=
.
| 5 |
| 9 |
| 5×12 |
| 9 |
| 60 |
| 9 |
| 20 |
| 3 |
点评:此题考查了分数乘整数的方法:把分子与整数相乘,分母不变,能约分的要约分.
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题目内容
| 5 |
| 9 |
| ( )×( ) |
| ( ) |
| ( ) |
| ( ) |
| 5 |
| 9 |
| 5 |
| 9 |
| 5×12 |
| 9 |
| 60 |
| 9 |
| 20 |
| 3 |