What is 2 to the negative 3rd power?

[steve smith]

Can someone explain what 2 raised to the power of -3 means and how to calculate it?

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[Lucas]

(2^{-3} = \frac{1}{2^3} = \frac{1}{8}).

 

[danisjohn]

2 to the negative 3rd power (2−32^{-3}2−3) equals 123=18\frac{1}{2^3} = \frac{1}{8}231=81. So, 2−3=0.1252^{-3} = 0.1252−3=0.125.