《2025年启东中学作业本七年级数学上册苏科版宿迁专版》

计算:
(1)$(-3)-(+\frac {1}{3})+5-(-1\frac {1}{3})$; (2)$(-12)-5+(-14)-(-39)$;
(3)$0.25+(-\frac {1}{8})-\frac {3}{4}-|-\frac {7}{8}|$; (4)$\frac {5}{6}+(-2\frac {1}{2})-(-1\frac {1}{6})-(+0.5)$;
(5)$5\frac {3}{4}-(-4\frac {2}{3})-5.75+(-7\frac {2}{3})$; (6)$\frac {2}{9}-(-1\frac {5}{6})+(-1\frac {2}{9})-\frac {1}{3}$;
(7)$(-301)+125+301+(-75)$; (8)$(-8)-(-15)+(-9)-(-12)$;
(9)$-\frac {31}{3}-(-\frac {58}{7})+(-\frac {9}{7})-(+\frac {32}{3})$;
(10)$(-4\frac {7}{9})-(-3\frac {1}{6})-(+\frac {2}{9})+(+6\frac {1}{6})$.

答案：
(1)3
(2)8
(3)-1.5
(4)-1
(5)-3
(6)$\frac{1}{2}$
(7)50
(8)10
(9)-14
(10)$4\frac{1}{3}$