题目内容
把下列各数用“<”连接起来:-
,0,-(-
),-(+3.5),-|-
|.
| 5 |
| 2 |
| 3 |
| 5 |
| 4 |
| 3 |
分析:先计算|-
|=
,-(-
)=
,-(+3.5)=-3.5,-|-
|=-
,然后根据正数大于0,负数小于0;负数的绝对值越大,这个数越小比较大小.
| 5 |
| 2 |
| 5 |
| 2 |
| 3 |
| 5 |
| 3 |
| 5 |
| 4 |
| 3 |
| 4 |
| 3 |
解答:解:∵|-
|=
,-(-
)=
,-(+3.5)=-3.5,-|-
|=-
∴-(+3.5)<-
<-|-
|<0<-(-
).
| 5 |
| 2 |
| 5 |
| 2 |
| 3 |
| 5 |
| 3 |
| 5 |
| 4 |
| 3 |
| 4 |
| 3 |
∴-(+3.5)<-
| 5 |
| 2 |
| 4 |
| 3 |
| 3 |
| 5 |
点评:本题考查了有理数大小比较:正数大于0,负数小于0;负数的绝对值越大,这个数越小.
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