计算
(1)-9+12-3+8
(2)(-1
)+(-
)+(+
)-(+
)
(3)(-3
)÷2
÷(-3
)×(-0.75)
(4)-16-(1-0.5)×
×[2-(-3)2]
(1)180+(﹣10)
(2)9﹣(﹣5)
(3)(﹣1.9)+3.6+(﹣10.1)+1.4
(4)(﹣
)﹣(﹣
)﹣(+
)
(5)﹣0.6+1.8﹣5.4+4.2
(6)|﹣15|﹣(﹣2)﹣(﹣5)
计算:
(1)(﹣17)+59+(﹣37)
(2)﹣43÷5×
(3)﹣1.53×0.75+0.53×
﹣3.4×0.75
(4)(+1.75)﹣|﹣
|+(+1.05)+(﹣
)﹣(﹣2.2)
(5)﹣(1﹣0.5)÷
(6)
.
(1)(﹣3)2×23﹣(﹣4)÷2
(2)(
﹣
+
﹣
)÷(﹣
)
(3)﹣14﹣(1﹣0.5)×
×[10﹣(﹣2)2]﹣(﹣1)3
(4)化简求值:3x2y﹣[2xy2﹣2(xy﹣
x2y)+xy]+3xy2,(其中x=3,y=﹣
)
计算:
(1)-3-(-4)+7;
(2)(
+
-
)×(-36);
(3)-14―(―5
)×
+(-2)3