题目内容
| 4 |
| 5 |
| 3 |
| 7 |
| 4 |
| 5 |
| 3 |
| 7 |
| 12 |
| 35 |
| 12 |
| 35 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:在计算
×
÷
×
时,把除法变为乘法,然后调整运算顺序,使计算简便.
| 4 |
| 5 |
| 3 |
| 7 |
| 4 |
| 5 |
| 3 |
| 7 |
解答:
解:
×
÷
×
=
×
×
×
=(
×
)×(
×
)
=1×
=
故答案为:×.
| 4 |
| 5 |
| 3 |
| 7 |
| 4 |
| 5 |
| 3 |
| 7 |
=
| 4 |
| 5 |
| 3 |
| 7 |
| 5 |
| 4 |
| 3 |
| 7 |
=(
| 4 |
| 5 |
| 5 |
| 4 |
| 3 |
| 7 |
| 3 |
| 7 |
=1×
| 9 |
| 49 |
=
| 9 |
| 49 |
故答案为:×.
点评:此题主要考查分数四则混合运算的运算顺序和运算法则.
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