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七年级数学解答题一般
题目
把下列数填入对应的集合:
5-5;②45-\frac{4}{5};③20222022;④(4)-\left(-4\right);⑤227\frac{22}{7};⑥13-|-13|;⑦0.36-0.36;⑧00;⑨6.2-6.2;⑩5%5\%.
(1)(1)正有理数:{______}\{ \_\_\_\_\_\_\cdots \}
(2)(2)负有理数:{______}\{ \_\_\_\_\_\_\cdots \}
(3)(3)负分数:{______}\{ \_\_\_\_\_\_\cdots \}
(4)(4)非负整数:{______}\{ \_\_\_\_\_\_\cdots \}
(5)(5)整数:{______}.\{ \_\_\_\_\_\_\cdots \}.
知识点:绝对值(二)章节:第1章 有理数 / 1.2 有理数 / 1.2.4 绝对值

答案与解析

答案

13=13-|-13|=-13
(1)(1)正有理数:{2022,(4)\{2022,-\left(-4\right)227\frac{22}{7}5%}5\%\cdots \}
(2)(2)负有理数:{5\{-545-\frac{4}{5}13,0.36,6.2}-|-13|,-0.36,-6.2\cdots \}
(3)(3)负分数:{45\{-\frac{4}{5}0.36,6.2}-0.36,-6.2\cdots \}
(4)(4)非负整数:{2022,(4),0}\{2022,-\left(-4\right),0\cdots \}.
(5)(5)整数:{5,2022,(4),13,0}\{-5,2022,-\left(-4\right),-|-13|,0\cdots \}
故答案为:20222022(4)-\left(-4\right)227\frac{22}{7}5%5\%5-545-\frac{4}{5}13-|-13|0.36-0.366.2-6.245-\frac{4}{5}0.36-0.366.2-6.220222022(4)-\left(-4\right)005-520222022(4)-\left(-4\right)13-|-13|00.

解析

13=13-|-13|=-13
(1)(1)正有理数:{2022,(4)\{2022,-\left(-4\right)227\frac{22}{7}5%}5\%\cdots \}
(2)(2)负有理数:{5\{-545-\frac{4}{5}13,0.36,6.2}-|-13|,-0.36,-6.2\cdots \}
(3)(3)负分数:{45\{-\frac{4}{5}0.36,6.2}-0.36,-6.2\cdots \}
(4)(4)非负整数:{2022,(4),0}\{2022,-\left(-4\right),0\cdots \}.
(5)(5)整数:{5,2022,(4),13,0}\{-5,2022,-\left(-4\right),-|-13|,0\cdots \}
故答案为:20222022(4)-\left(-4\right)227\frac{22}{7}5%5\%5-545-\frac{4}{5}13-|-13|0.36-0.366.2-6.245-\frac{4}{5}0.36-0.366.2-6.220222022(4)-\left(-4\right)005-520222022(4)-\left(-4\right)13-|-13|00.

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