①
-2又1/2+1又5/6-1/2+1/6
=-5/2+11/6-1/2+1/6
=-3+2
=-1
②
1/(-1)+0/4-5*0.1*(-2)^3
=-1+0-0.5*(-8)
=-1+4
=3
③
11/5*(1/3-1/2)*3/11/5/4
=11/5*(-1/6)*3/11/5/4
=-(11*3)/(5*6*11*5*4)
=-1/(5*2*5*4)
=-1/200
④-3-[-5+(1-0.2*3/5)/(-2)]
=-3-[-5+(1-1/5*3/5)/(-2)]
=-3-[-5+(1-3/25)/(-2)]
=-3-[-5-11/25]
=-3+5+11/25
=2+11/25
=61/25
⑤
（-18）/（-3/2）*（-2/3）-（-2）*（-1）
=-18*2/3*2/3-2*1
=-8-2
=-10
⑥
|-5|-（-3）^2-（-2/3）-|-5/6|
=5-9+2/3-5/6
=-4+2/3-5/6
=(-24+4-5)/6
=-25/6