How do you express 1/256 as a decimal?

To express the fraction 1/256 as a decimal, you need to perform the division of 1 by 256. When you divide 1 by 256, you are essentially finding out how many times 256 fits into 1.

Calculating this gives us:

1 ÷ 256 = 0.00390625

So, 1/256 expressed as a decimal is 0.00390625.