计算：

（1）（-8）-（-1）                                        （2）45+（-30）                          

（3）-1.5-（-11.5）                                    （4）-1/4-(-1/2)                            

（5）15-[1-(-20-4)]                                                                    （6）-40-28-（-19）+（-24）                        

（7）22.54+（-4.4）+（-12.54）+4.4       

（8） (2/3-1/2)-(1/3-5/6)                         

（9）2.4-(-3/5)+(-3.1)+4/5                                                               （10）(-6/13)+(-7/13)-(-2)

(11)3/4-(-11/6)+(-7/3)

(12)11+(-22)-3×(-11)

(13)(-0.1)÷1/2×(-100)

(14)(-3/4)×(-2/3 - 1/3) ×0

(15)(-2)3-32

(16)23÷[(-2)3-(-4)]

(17)(3/4-7/8)÷(-7/8)

(18)(-60)×(3/4+5/6)