-1^100-(1-0.5)÷3*[3-(-3)^2]

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-1^100-(1-0.5)÷3*[3-(-3)^2]

-1^100-(1-0.5)÷3*[3-(-3)^2]
-1^100-(1-0.5)÷3*[3-(-3)^2]

-1^100-(1-0.5)÷3*[3-(-3)^2]
-1^100-(1-0.5)÷3*[3-(-3)^2]
=-1-0.5÷3*(3-9)
=-1+0.5÷3*6
=-1+1
=0

=-1-0.5÷3*(3-9)
=-1-0.5*(-6÷3)
=-1+0.5*2
=-1+1
=0

原式=1-0.5÷3*(-6)
=1-0.5÷(-0.5)
=1-1=0