题目内容
脱式计算.
×
×
;
÷
×
;
÷
÷
.
| 4 |
| 5 |
| 5 |
| 12 |
| 1 |
| 8 |
| 23 |
| 33 |
| 23 |
| 24 |
| 3 |
| 8 |
| 3 |
| 5 |
| 11 |
| 15 |
| 3 |
| 8 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:(1)按照从左到右的顺序计算;
(2)(3)先把除法变成乘法,然后约分计算.
(2)(3)先把除法变成乘法,然后约分计算.
解答:
解:(1)
×
×
=
×
=
;
(2)
÷
×
=
×
×
=
;
(3)
÷
÷
=
×
×
=
.
| 4 |
| 5 |
| 5 |
| 12 |
| 1 |
| 8 |
=
| 1 |
| 3 |
| 1 |
| 8 |
=
| 1 |
| 24 |
(2)
| 23 |
| 33 |
| 23 |
| 24 |
| 3 |
| 8 |
=
| 23 |
| 33 |
| 24 |
| 23 |
| 3 |
| 8 |
=
| 3 |
| 11 |
(3)
| 3 |
| 5 |
| 11 |
| 15 |
| 3 |
| 8 |
=
| 3 |
| 5 |
| 15 |
| 11 |
| 8 |
| 3 |
=
| 24 |
| 11 |
点评:本题考查了学生通过约分对分数四则混合运题目进行简算的能力.
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