题目内容
| 4 |
| 3 |
| 2 |
| 27 |
8×
| 3 |
| 40 |
分析:分数乘整数的计算方法:用分数的分子和整数相乘的积作分子,分母不变,能约分的要先约分再计算.
解答:解:
×3=
=4;
×9=
=
;
8×
=
=
.
| 4 |
| 3 |
| 4×3 |
| 3 |
| 2 |
| 27 |
| 2×9 |
| 27 |
| 2 |
| 3 |
8×
| 3 |
| 40 |
| 8×3 |
| 40 |
| 3 |
| 5 |
点评:此题考查分数乘整数计算方法的灵活运用.
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题目内容
| 4 |
| 3 |
| 2 |
| 27 |
| 3 |
| 40 |
| 4 |
| 3 |
| 4×3 |
| 3 |
| 2 |
| 27 |
| 2×9 |
| 27 |
| 2 |
| 3 |
| 3 |
| 40 |
| 8×3 |
| 40 |
| 3 |
| 5 |