题目内容
24÷
×(
+1
-
-
)
| 29 |
| 30 |
| 7 |
| 8 |
| 3 |
| 4 |
| 11 |
| 12 |
| 1 |
| 2 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:先算加法,再算减法,再算除法,最后算乘法.
解答:
解:24÷
×(
+1
-
-
)
=24÷
×(2
-
-
)
=24÷
×(1
-
)
=24÷
×1
=24×
×
=24×
×
=29×
=30.
| 29 |
| 30 |
| 7 |
| 8 |
| 3 |
| 4 |
| 11 |
| 12 |
| 1 |
| 2 |
=24÷
| 29 |
| 30 |
| 5 |
| 8 |
| 11 |
| 12 |
| 1 |
| 2 |
=24÷
| 29 |
| 30 |
| 17 |
| 24 |
| 1 |
| 2 |
=24÷
| 29 |
| 30 |
| 5 |
| 24 |
=24×
| 30 |
| 29 |
| 29 |
| 24 |
=24×
| 29 |
| 24 |
| 30 |
| 29 |
=29×
| 30 |
| 29 |
=30.
点评:考查了分数四则混合运算,注意运算顺序和运算法则,然后再进一步计算.
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