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?jǐn)?shù)集合:{                                        …};
無(wú)理數(shù)集合:{                                            …}.
分析:先根據(jù)絕對(duì)值的定義,百分?jǐn)?shù)的化簡(jiǎn)方法,乘方的意義化簡(jiǎn)對(duì)應(yīng)數(shù),再根據(jù)正數(shù)、整數(shù)、分?jǐn)?shù)、無(wú)理數(shù)的定義求解即可.
解答:解:-|-
22
7
|=-
22
7
,200%=2,-(-2)3=8.
正數(shù)集合:{ 10,
π
3
,200%,-(-2)3,3.14,…};
整數(shù)集合:{ 10,0,200%,-(-2)3,…};
分?jǐn)?shù)集合:{-|-
22
7
|,-1.333…,3.14,…};
無(wú)理數(shù)集合:{ 
π
3
,-2.323323332 …,…}.
點(diǎn)評(píng):本題主要考查了有理數(shù)的分類及無(wú)理數(shù)的定義.認(rèn)真掌握正數(shù)、整數(shù)、分?jǐn)?shù)、無(wú)理數(shù)的定義與特點(diǎn).特別注意整數(shù)和正數(shù)的區(qū)別,0是整數(shù),但不是正數(shù).
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