题目内容
用递等式计算.
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考点:分数的四则混合运算
专题:运算顺序及法则
分析:由于题干中的算式都是同一级运算,按照从左到右顺序计算即可解答.
解答:
解:
÷
×
=
×
=
;
×
÷
=
÷
=
;
×
×
=
×
=
;
÷4×
÷
=
×
÷
=
÷
=
;
×
÷
×
=
÷
×
=
×
=
;
÷
÷
=
÷
=3
.
| 10 |
| 21 |
| 25 |
| 12 |
| 7 |
| 8 |
=
| 8 |
| 35 |
| 7 |
| 8 |
=
| 1 |
| 5 |
| 11 |
| 12 |
| 17 |
| 55 |
| 17 |
| 14 |
=
| 17 |
| 60 |
| 17 |
| 14 |
=
| 7 |
| 30 |
| 5 |
| 7 |
| 3 |
| 4 |
| 1 |
| 12 |
=
| 15 |
| 28 |
| 1 |
| 12 |
=
| 5 |
| 112 |
| 1 |
| 4 |
| 6 |
| 7 |
| 3 |
| 4 |
=
| 1 |
| 16 |
| 6 |
| 7 |
| 3 |
| 4 |
=
| 3 |
| 56 |
| 3 |
| 4 |
=
| 1 |
| 14 |
| 2 |
| 3 |
| 3 |
| 4 |
| 2 |
| 3 |
| 3 |
| 4 |
=
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
=
| 3 |
| 4 |
| 3 |
| 4 |
=
| 9 |
| 16 |
| 5 |
| 8 |
| 7 |
| 12 |
| 5 |
| 18 |
=
| 15 |
| 14 |
| 5 |
| 18 |
=3
| 6 |
| 7 |
点评:依据四则运算计算方法正确进行计算是本题考查知识点.
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