Then, think of each number as a fraction, like 1/10.
I am going to pick 0.4. This would be representing four out of ten, or 4/10.
You could also choose a more complicated number, such as 2.25. Just remember that it MUST be terminating, which means it cannot be a repeating decimal (like 3.333). 2.25 would be expressed as 2 and 25/100, or 2 and 1/4.