题目内容
先约分,再化成带分数.
.
| 15 |
| 12 |
| 20 |
| 12 |
| 77 |
| 21 |
| 70 |
| 32 |
| 90 |
| 80 |
| 150 |
| 60 |
考点:整数、假分数和带分数的互化
专题:运算顺序及法则
分析:首先根据分数的基本性质把各分数化成最简分数,然后根据假分数化成带分数的方法解答即可.
解答:
解:
=
=
=1
;
=
=
=1
;
=
=
=3
;
=
=
=2
;
=
=
=1
;
=
=
=2
.
| 15 |
| 12 |
| 15÷3 |
| 12÷3 |
| 5 |
| 4 |
| 1 |
| 4 |
| 20 |
| 12 |
| 20÷4 |
| 12÷4 |
| 5 |
| 3 |
| 2 |
| 3 |
| 77 |
| 21 |
| 77÷7 |
| 21÷7 |
| 11 |
| 3 |
| 2 |
| 3 |
| 70 |
| 32 |
| 70÷2 |
| 32÷2 |
| 35 |
| 16 |
| 3 |
| 16 |
| 90 |
| 80 |
| 90÷10 |
| 80÷10 |
| 9 |
| 8 |
| 1 |
| 8 |
| 150 |
| 60 |
| 150÷30 |
| 60÷30 |
| 5 |
| 2 |
| 1 |
| 2 |
点评:此题考查的目的是理解掌握约分的方法步骤,以及假分数化成带分数的方法.
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