题目内容
在横线上填上“>”“<”“=”
3×
13×
5×
3×
2×
8×
×8
×3
.
3×
| 2 |
| 5 |
| 4 |
| 5 |
| 6 |
| 13 |
| 2 |
| 13 |
| 1 |
| 9 |
| 5 |
| 9 |
3×
| 2 |
| 7 |
| 3 |
| 7 |
| 3 |
| 4 |
| 3 |
| 5 |
| 2 |
| 9 |
| 2 |
| 9 |
考点:分数大小的比较,分数乘法
专题:运算顺序及法则
分析:根据分数大小的比较方法进行解答即可.
解答:
解:(1)3×
=
,
>
,
所以3×
>
;
(2)13×
=
,
<
,
所以
<13×
;
(3)5×
=
,
=
,
所以 5×
=
;
(4)3×
=
,2×
=
,
=
,
所以3×
=2×
;
(5)8×
=
,
×8=
,
=
,
所以8×
>
×8;
(6)
×3=
,
>
,
所以
×3>
.
故答案为:>,<,=,=,>,>.
| 2 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 4 |
| 5 |
所以3×
| 2 |
| 5 |
| 4 |
| 5 |
(2)13×
| 2 |
| 13 |
| 26 |
| 13 |
| 6 |
| 13 |
| 26 |
| 13 |
所以
| 6 |
| 13 |
| 2 |
| 13 |
(3)5×
| 1 |
| 9 |
| 5 |
| 9 |
| 5 |
| 9 |
| 5 |
| 9 |
所以 5×
| 1 |
| 9 |
| 5 |
| 9 |
(4)3×
| 2 |
| 7 |
| 6 |
| 7 |
| 3 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
所以3×
| 2 |
| 7 |
| 3 |
| 7 |
(5)8×
| 3 |
| 4 |
| 24 |
| 4 |
| 3 |
| 5 |
| 24 |
| 5 |
| 24 |
| 4 |
| 24 |
| 5 |
所以8×
| 3 |
| 4 |
| 3 |
| 5 |
(6)
| 2 |
| 9 |
| 6 |
| 9 |
| 6 |
| 9 |
| 2 |
| 9 |
所以
| 2 |
| 9 |
| 2 |
| 9 |
故答案为:>,<,=,=,>,>.
点评:此题考查了分数乘法的计算方法,灵活运用分数的性质进行大小比较.
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