(1)=-(10*8.24*0.1)
=-8.24
(2)=81/20*1.25*8
=81/20*10
=81/2
(3)=36*-7/9+36*5/6+36*3/4-36*7/18
=-28+30+27-14
=-(28+14)+(27+30)
=-42+57
=57-42
=15
(4)=-((31+15/16)*8)
=-(31*8+15/16*8)
=-(248+7又1/2)
=-255又1/2
(8)=-((35+1/6)*4)
=-(35*4+4*6/7)
=-(140+3又3/7)
=-143又3/7
你是不是东华的?
东莞那个东华初级中学,
你几班的?