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计算:
(1)$(+5)-7-(-4)+(-5)+10$; (2)$(-\frac {1}{2})+(+\frac {4}{3})-\frac {7}{4}+(-3)$;
(3)$8-(+11)-(-20)+(-19)$; (4)$12-(-7)-(+6)+(-9)+(+11)$;
(5)$(+5)-(-3)+(-7)-(+12)$; (6)$(-8)-(-10)+(-6)-(+4)$;
(7)$\frac {7}{3}+(-\frac {5}{2})-(-\frac {23}{6})$; (8)$(-0.5)-(-3\frac {1}{4})+2.75-(-7\frac {1}{2})$;
(9)$(-3.5)+(-6)-(+4.8)-(-5)$; (10)$(-3)+(+6)-(-10)-(-7)$.
(1)$(+5)-7-(-4)+(-5)+10$; (2)$(-\frac {1}{2})+(+\frac {4}{3})-\frac {7}{4}+(-3)$;
(3)$8-(+11)-(-20)+(-19)$; (4)$12-(-7)-(+6)+(-9)+(+11)$;
(5)$(+5)-(-3)+(-7)-(+12)$; (6)$(-8)-(-10)+(-6)-(+4)$;
(7)$\frac {7}{3}+(-\frac {5}{2})-(-\frac {23}{6})$; (8)$(-0.5)-(-3\frac {1}{4})+2.75-(-7\frac {1}{2})$;
(9)$(-3.5)+(-6)-(+4.8)-(-5)$; (10)$(-3)+(+6)-(-10)-(-7)$.
答案：
(1)7
(2)$-3\frac{11}{12}$
(3)$-2$
(4)15
(5)$-11$
(6)$-8$
(7)$\frac{11}{3}$
(8)13
(9)$-9.3$
(10)20
(1)7
(2)$-3\frac{11}{12}$
(3)$-2$
(4)15
(5)$-11$
(6)$-8$
(7)$\frac{11}{3}$
(8)13
(9)$-9.3$
(10)20
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