题目内容
把下面的分数约分成最简分数,是假分数,要化成整数或带分数.
.
| 18 |
| 42 |
| 42 |
| 54 |
| 25 |
| 75 |
| 44 |
| 55 |
| 26 |
| 78 |
| 56 |
| 91 |
| 32 |
| 14 |
| 224 |
| 120 |
分析:找出分子分母的最大公约数,根据分数的基本性质,分子分母同时除以相同的数,值不变.即可得解.
解答:解:(1)
=
=
;
(2)
=
=
;
(3)
=
=
;
(4)
=
=
;
(5)
=
=
;
(6)
=
=
;
(7)
=
=
=2
;
(8)
=
=
=1
.
| 18 |
| 42 |
| 18÷6 |
| 42÷6 |
| 3 |
| 7 |
(2)
| 42 |
| 54 |
| 42÷6 |
| 54÷6 |
| 7 |
| 9 |
(3)
| 25 |
| 75 |
| 25÷25 |
| 75÷25 |
| 1 |
| 3 |
(4)
| 44 |
| 55 |
| 44÷11 |
| 55÷11 |
| 4 |
| 5 |
(5)
| 26 |
| 78 |
| 26÷26 |
| 78÷26 |
| 1 |
| 3 |
(6)
| 56 |
| 91 |
| 56÷7 |
| 91÷7 |
| 8 |
| 13 |
(7)
| 32 |
| 14 |
| 32÷2 |
| 14÷2 |
| 16 |
| 7 |
| 2 |
| 7 |
(8)
| 224 |
| 120 |
| 224÷8 |
| 120÷8 |
| 28 |
| 15 |
| 13 |
| 15 |
点评:此题考查了分数的化简,以及假分数化成带分数的方法.
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