比较大小(1)-3与-4(2)23与-34(3)-56与-67(4)-(+3.5)与-|-113|.-数学

题目简介

比较大小(1)-3与-4(2)23与-34(3)-56与-67(4)-(+3.5)与-|-113|.-数学

题目详情

比较大小
(1)-3与-4
(2)
2
3
-
3
4

(3)-
5
6
-
6
7

(4)-(+3.5)与-|-
11
3
|
题型:解答题难度:中档来源:不详

答案

(1)∵|-3|=3,|-4|=4,
∴-3>-4;

(2)class="stub"2
3
>-class="stub"3
4


(3)∵|-class="stub"5
6
|=class="stub"5
6
=class="stub"35
42
,|-class="stub"6
7
|=class="stub"6
7
=class="stub"36
42

∴-class="stub"5
6
>-class="stub"6
7


(4)∵-(+3.5)=-3.5=-class="stub"7
2
=-class="stub"21
6
,-|-class="stub"11
3
|=-class="stub"11
3
=-class="stub"22
6

又∵|-class="stub"21
6
|=class="stub"21
6
,|-class="stub"22
6
|=class="stub"22
6

∴-(+3.5)>-|-class="stub"11
3
|.

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