题目内容
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 4 |
| 7 |
| 2 |
| 3 |
| 2 |
| 3 |
| 4 |
| 5 |
| 7 |
| 9 |
| 2 |
| 7 |
| 7 |
| 9 |
| 5 |
| 9 |
| 5 |
| 9 |
分析:分别计算出算式两边的结果,再比较即可.
解答:解:(1)
×2=
+
=
;
=
,
所以
×2=
+
;
(2)
+
=
×
=
>
所以
+
>
×
;
(3)
×
=
<
所以
×
>
;
(4)
×8=
<8
所以
×8<8;
(5)
×
=
<
所以
×
<
;
(6)1-
=
1×
=
<
所以1-
<1×
;
故答案为:=,>,<,<,<,<.
| 3 |
| 5 |
| 6 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
所以
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
(2)
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 3 |
| 5 |
| 6 |
| 5 |
| 6 |
| 25 |
| 36 |
| 5 |
| 3 |
| 25 |
| 36 |
所以
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
(3)
| 4 |
| 7 |
| 2 |
| 3 |
| 8 |
| 21 |
| 8 |
| 21 |
| 2 |
| 3 |
所以
| 4 |
| 7 |
| 2 |
| 3 |
| 2 |
| 3 |
(4)
| 4 |
| 5 |
| 32 |
| 5 |
| 32 |
| 5 |
所以
| 4 |
| 5 |
(5)
| 7 |
| 9 |
| 2 |
| 7 |
| 2 |
| 9 |
| 2 |
| 9 |
| 7 |
| 9 |
所以
| 7 |
| 9 |
| 2 |
| 7 |
| 7 |
| 9 |
(6)1-
| 5 |
| 9 |
| 4 |
| 9 |
1×
| 5 |
| 9 |
| 5 |
| 9 |
| 4 |
| 9 |
| 5 |
| 9 |
所以1-
| 5 |
| 9 |
| 5 |
| 9 |
故答案为:=,>,<,<,<,<.
点评:解决本题关键是正确的计算出结果,然后再根据分数比较大小的方法求解.
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