题目内容
-()2×3-4÷(-)×+8×(-1)2
27
用简便方法计算:
3032-909.
[(x-y)2+(x+y)2](x2-2y2)
(-12)-(-1)-(-32)-46
(-2)2÷5×(-2÷5)2
-14-(-2)3×5-{0.25-[-12+(-)3×(3-5)]}÷3
+
(-3)+(+15.5)+(-6)+(-5).
用计算器求×5.6-0.83.