Convert 0.625 to a fraction.

To convert the decimal 0.625 to a fraction, it is helpful to recognize that this decimal can be expressed as a fraction over a power of ten. Specifically, 0.625 can be rewritten as 625/1000 since there are three digits to the right of the decimal point.

Next, simplify the fraction 625/1000. To do this, we find the greatest common divisor (GCD) of 625 and 1000, which is 125. Dividing both the numerator and the denominator by 125 gives us:

625 ÷ 125 = 5

1000 ÷ 125 = 8

This results in the simplified fraction 5/8.

Therefore, the decimal 0.625 is equal to the fraction 5/8, which is the correct answer. Converting decimals to fractions often involves finding the appropriate power of ten and then simplifying to obtain the simplest form, as demonstrated in this conversion.