5/8×（-4）^2-0.25×（-5）÷(-1/2)^3
=5/8×16+1.25÷(-1/8)
=10+1.25×(-8)
=10-10
=0.
(5/8)(-4)^2-0.25(-5)/(-1/2)^3
=(5/8)(16)+ (1/4)(5)(8)
=10+10
=20
（5/8)*(-4)^2-0.25*(-5)÷（-1/2)^3
=(5/8)*16-(1/4)*(-5)÷(-1/8)
=10-(1/4)*5*8
=10-10
=0
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