-0.25÷(-1/2)^3+(1/8-1/2)×(-1)^50
问题描述：
-0.25÷(-1/2)^3+(1/8-1/2)×(-1)^50
答
-0.25÷(-1/2)^3+(1/8-1/2)×(-1)^50
=-1/4*(-8)+(1/8-1/2)*1
=2+(1/8-1/2)
=2+(1/8-4/8)
=2-3/8
=1又8分之5