將下列各數(shù)填在相應(yīng)的集合里.
-3.8,-20%,4.3,-|-
20
7
|,42,0,-(-
3
5
),-32
整數(shù)集合:{
42,0,-32
42,0,-32
…};
分數(shù)集合:{
-3.8,-20%4.3,-|-
20
7
|,-(-
3
5
-3.8,-20%4.3,-|-
20
7
|,-(-
3
5
 …};
正數(shù)集合:{
4.3,42,-(-
3
5
4.3,42,-(-
3
5
…};
負數(shù)集合:{
-3.8,-|-
20
7
|,-32
-3.8,-|-
20
7
|,-32
 …}.
在已知的數(shù)據(jù)中,最大的數(shù)是
42
42
,最小的數(shù)是
-32
-32
分析:先根據(jù)絕對值的性質(zhì)和相反數(shù)的定義化簡,根據(jù)有理數(shù)的乘方進行計算,再根據(jù)整數(shù)、分數(shù)、正數(shù)、負數(shù)的定義填空,根據(jù)有理數(shù)的大小比較確定出最大的數(shù)和最小的數(shù).
解答:解:-|-
20
7
|=-
20
7
,42=16,-(-
3
5
)=
3
5
,-32=-9,
整數(shù)集合:{42,0,-32…};
分數(shù)集合:{-3.8,-20% 4.3,-|-
20
7
|,-(-
3
5
)…};
正數(shù)集合:{4.3,42,-(-
3
5
)…};
負數(shù)集合:{-3.8,-|-
20
7
|,-32…}.
在已知的數(shù)據(jù)中,最大的數(shù)是42,最小的數(shù)是-32
點評:本題考查了有理數(shù),認真掌握正數(shù)、負數(shù)、整數(shù)、分數(shù)、正有理數(shù)、負有理數(shù)、非負數(shù)的定義與特點.注意整數(shù)和正數(shù)的區(qū)別,注意0是整數(shù),但不是正數(shù).
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:初中數(shù)學(xué) 來源: 題型:

將下列各數(shù)填在相應(yīng)的集合里.
-3.8,-10,4.3,-|-
20
7
|,-4,0,-(-
3
5

整數(shù)集合:{                 },分數(shù)集合:{                    },
正數(shù)集合:{                 },負數(shù)集合:{                     }.

查看答案和解析>>

科目:初中數(shù)學(xué) 來源: 題型:

將下列各數(shù)填在相應(yīng)的集合里:
10,-|-
22
7
|,0,
π
3
,-1.333…,200%,-(-2)3,-2.323323332 …,3.14.
正數(shù)集合:{                                              …};
整數(shù)集合:{                                              …};
分數(shù)集合:{                                        …};
無理數(shù)集合:{                                            …}.

查看答案和解析>>

科目:初中數(shù)學(xué) 來源: 題型:

將下列各數(shù)填在相應(yīng)的集合里.
-3.8,-10,4.3,-|-
20
7
|,42,0,-
36
6

-(-
3
5
),π,-0.2020020002…(每隔一個多一個0),
整數(shù)集合:{                                …};
分數(shù)集合:{                                …};
正數(shù)集合:{                                …};
負數(shù)集合:{                                …}.

查看答案和解析>>

科目:初中數(shù)學(xué) 來源: 題型:

將下列各數(shù)填在相應(yīng)的集合符號里5,-2,-0.3,
1
4
,0,-
1
3
,5.7,-1
1
6
,102,17.
正數(shù)集合:
{5,
1
4
,5.7,102,17…}
{5,
1
4
,5.7,102,17…}
;負數(shù)集合:
{-2,-0.3,-
1
3
,-1
1
6
…}
{-2,-0.3,-
1
3
,-1
1
6
…}
;
整數(shù)集合:
{5,-2,0,102,17…}
{5,-2,0,102,17…}
;分數(shù)集合:
{-0.3,
1
4
,-
1
3
,5.7,-1
1
6
…}
{-0.3,
1
4
,-
1
3
,5.7,-1
1
6
…}

查看答案和解析>>

科目:初中數(shù)學(xué) 來源: 題型:

將下列各數(shù)填在相應(yīng)的集合里.
-3.8,-10,4.3,-|-
20
7
|,42,π,3,101001000…,0,-(-
3
5

整數(shù)集合:{                                …};
分數(shù)集合:{                                …};
正數(shù)集合:{                                …};
負數(shù)集合; {                                …};
有理數(shù)集合:{                                …}.

查看答案和解析>>

同步練習(xí)冊答案