题目内容
下列算式中,得数比
×
大的是( )
| 3 |
| 8 |
| 2 |
| 9 |
分析:分别计算出每个算式的大小,再据分数大小的比较方法,即可得解.
解答:解:
×
=
,
A,
×
=
,
>
,
B,
×
=
,
=
>
,
C,
×5=
,
<
,
D,
×
=
,
=
<
=
,
所以得数比
×
大的是
×5和
×
;
故选:C、D.
| 3 |
| 8 |
| 2 |
| 9 |
| 1 |
| 12 |
A,
| 3 |
| 8 |
| 1 |
| 9 |
| 1 |
| 24 |
| 1 |
| 12 |
| 1 |
| 24 |
B,
| 3 |
| 10 |
| 2 |
| 11 |
| 3 |
| 55 |
| 1 |
| 12 |
| 3 |
| 36 |
| 3 |
| 55 |
C,
| 5 |
| 8 |
| 25 |
| 8 |
| 1 |
| 12 |
| 25 |
| 8 |
D,
| 8 |
| 9 |
| 1 |
| 2 |
| 4 |
| 9 |
| 1 |
| 12 |
| 3 |
| 36 |
| 4 |
| 9 |
| 16 |
| 36 |
所以得数比
| 3 |
| 8 |
| 2 |
| 9 |
| 5 |
| 8 |
| 8 |
| 9 |
| 1 |
| 2 |
故选:C、D.
点评:此题主要考查分数大小的比较方法的灵活应用.
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