1. 化简:
(1)$\frac {-27}{9}$; (2)$\frac {-24}{-6}$; (3)$\frac {0}{-8}$; (4)$\frac {-3}{-\frac {6}{5}}$.
(1)$\frac {-27}{9}$; (2)$\frac {-24}{-6}$; (3)$\frac {0}{-8}$; (4)$\frac {-3}{-\frac {6}{5}}$.
答案:
(1)-3
(2)4
(3)0
(4)$\frac{5}{2}$
(1)-3
(2)4
(3)0
(4)$\frac{5}{2}$
2. 计算:
(1)$(-36)÷9$; (2)$(-\frac {12}{25})÷(-\frac {3}{5})$;
(3)$(-2.4)÷(-1\frac {1}{5})$; (4)$2\frac {1}{3}÷(-1\frac {1}{6})$;
(5)$0÷(-\frac {5}{23})$; (6)$(-2.5)÷\frac {5}{4}$;
(7)$-9÷(-\frac {3}{8})$; (8)$\frac {5}{12}÷(-\frac {1}{36})$.
(1)$(-36)÷9$; (2)$(-\frac {12}{25})÷(-\frac {3}{5})$;
(3)$(-2.4)÷(-1\frac {1}{5})$; (4)$2\frac {1}{3}÷(-1\frac {1}{6})$;
(5)$0÷(-\frac {5}{23})$; (6)$(-2.5)÷\frac {5}{4}$;
(7)$-9÷(-\frac {3}{8})$; (8)$\frac {5}{12}÷(-\frac {1}{36})$.
答案:
(1)-4
(2)$\frac{4}{5}$
(3)2
(4)-2
(5)0
(6)-2
(7)24
(8)-15
(1)-4
(2)$\frac{4}{5}$
(3)2
(4)-2
(5)0
(6)-2
(7)24
(8)-15
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