题目内容
计算
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|
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| 15÷
|
考点:分数的四则混合运算
专题:运算顺序及法则
分析:根据分数的四则混合运算顺序先把除法转化为乘法,再约分即可.
解答:
解:(1)
÷6÷
=
×
×15
=
;
(2)
×
×
=
(3)
×
÷
=
×
×
=4;
(4)
÷
×
=
×
×
=
;
(5)
÷
×
=
×
×
=
;
(6)15÷
×
=15×
×
=10.
| 3 |
| 5 |
| 1 |
| 15 |
=
| 3 |
| 5 |
| 1 |
| 6 |
=
| 3 |
| 2 |
(2)
| 7 |
| 12 |
| 3 |
| 7 |
| 5 |
| 6 |
| 5 |
| 24 |
(3)
| 16 |
| 5 |
| 1 |
| 2 |
| 2 |
| 5 |
=
| 16 |
| 5 |
| 1 |
| 2 |
| 5 |
| 2 |
=4;
(4)
| 7 |
| 8 |
| 3 |
| 4 |
| 2 |
| 3 |
=
| 7 |
| 8 |
| 4 |
| 3 |
| 3 |
| 2 |
=
| 7 |
| 4 |
(5)
| 3 |
| 5 |
| 3 |
| 4 |
| 1 |
| 9 |
=
| 3 |
| 5 |
| 4 |
| 3 |
| 1 |
| 9 |
=
| 4 |
| 45 |
(6)15÷
| 9 |
| 10 |
| 3 |
| 5 |
=15×
| 10 |
| 9 |
| 3 |
| 5 |
=10.
点评:本题主要考查了分数的四则混合运算,熟练掌握运算顺序是解题的关键.
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