题目内容
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分析:根据约分的意义,把一个分数化成大小和原来相等但分子、分母都比较小的分数叫做约分.约分的结果一定是最简分数(分子和分母是互质数).由此解答.
解答:解:
=
=
;
=
=
=1
;
=
=
;
=
=
;
=
=
;
=
=
=2
;
=
=
=2
;
=
=
=1
.
| 3 |
| 18 |
| 3÷3 |
| 18÷3 |
| 1 |
| 6 |
| 99 |
| 54 |
| 99÷9 |
| 54÷9 |
| 11 |
| 6 |
| 5 |
| 6 |
| 40 |
| 75 |
| 40÷5 |
| 75÷5 |
| 8 |
| 15 |
| 36 |
| 48 |
| 36÷12 |
| 48÷12 |
| 3 |
| 4 |
| 20 |
| 65 |
| 20÷5 |
| 65÷5 |
| 4 |
| 13 |
| 84 |
| 30 |
| 84÷6 |
| 30÷6 |
| 14 |
| 5 |
| 4 |
| 5 |
| 126 |
| 28 |
| 126÷14 |
| 28÷14 |
| 9 |
| 2 |
| 1 |
| 4 |
| 20 |
| 12 |
| 20÷4 |
| 12÷4 |
| 5 |
| 3 |
| 2 |
| 3 |
点评:此题主要考查约分的意义和方法,用分子和分母分别除以它们的最大公因数,约成最简分数,结果是假分数的通常化成带分数或整数.
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