题目内容
下列算式中,( )的得数最大.
分析:根据分数乘法、除法的计算法则分别计算出各式的结果,然后进行比较即可.
解答:解:
×
=
,
÷
=
×
=
,
×
=
,
÷
=
×
=
,
=
,
=
,
=
,
=
,
因为:
>
>
>
;
所以:
÷
>
÷
>
×
>
×
.
答:
÷
的得数最大.
故选:B.
| 4 |
| 15 |
| 2 |
| 3 |
| 8 |
| 45 |
| 4 |
| 15 |
| 2 |
| 3 |
| 4 |
| 15 |
| 3 |
| 2 |
| 2 |
| 5 |
| 4 |
| 15 |
| 4 |
| 5 |
| 16 |
| 75 |
| 4 |
| 15 |
| 4 |
| 5 |
| 4 |
| 15 |
| 5 |
| 4 |
| 1 |
| 3 |
| 8 |
| 45 |
| 40 |
| 225 |
| 2 |
| 5 |
| 90 |
| 225 |
| 16 |
| 75 |
| 48 |
| 225 |
| 1 |
| 3 |
| 75 |
| 225 |
因为:
| 90 |
| 225 |
| 75 |
| 225 |
| 48 |
| 225 |
| 40 |
| 225 |
所以:
| 4 |
| 15 |
| 2 |
| 3 |
| 4 |
| 15 |
| 4 |
| 5 |
| 4 |
| 15 |
| 4 |
| 5 |
| 4 |
| 15 |
| 2 |
| 3 |
答:
| 4 |
| 15 |
| 2 |
| 3 |
故选:B.
点评:此题考查的目的是牢固掌握分数乘法、乘法的计算法则以及分数大小比较的方法.
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