The maximum decimal you can have is 1. 1.0, 1.00, 1.000, same thing.

To convert the decimal .123 into a fraction, we will have to put .123 as the numerator and the maximum decimal (which is 1) as the denominator.

0.123/1

Try to avoid decimals in fractions. In this case, multiply both the numerator and denominator by 1,000 to get rid of the decimal sign.

(0.123 * 1,000)/(1 * 1,000) = **123/1000**

And we can't simplify it any further.