题目内容
把下列各分数约分.
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分析:利用分数的基本性质,即分数的分子和分母同时乘上或除以相同的数(0除外),分数的大小不变,从而可以正确进行作答.
解答:解:
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=
;
=
=
;
=
=
;
=
=
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=
=
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=
;
=
=
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=
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=
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=
.
| 4 |
| 8 |
| 4÷4 |
| 8÷4 |
| 1 |
| 2 |
| 12 |
| 18 |
| 12÷6 |
| 18÷6 |
| 2 |
| 3 |
| 15 |
| 80 |
| 15÷5 |
| 80÷5 |
| 3 |
| 16 |
| 21 |
| 49 |
| 21÷7 |
| 49÷7 |
| 3 |
| 7 |
| 10 |
| 15 |
| 10÷5 |
| 15÷5 |
| 2 |
| 3 |
| 48 |
| 100 |
| 48÷4 |
| 100÷4 |
| 12 |
| 25 |
| 9 |
| 72 |
| 9÷9 |
| 72÷9 |
| 1 |
| 8 |
| 24 |
| 40 |
| 24÷8 |
| 40÷8 |
| 3 |
| 5 |
| 13 |
| 65 |
| 13÷13 |
| 65÷13 |
| 1 |
| 5 |
| 35 |
| 50 |
| 35÷5 |
| 50÷5 |
| 7 |
| 10 |
点评:此题主要考查分数的基本性质的灵活应用.
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