9.9 as a Fraction

Writing 9.9 as a fraction requires us to multiply 9.9/1 by 10/10 which will result in 99/10 - the final answer, since this fraction cannot be reduced. Because this is an improper fraction it can also be written it as a mixed number 9 9/10.

What Is 9.9 as a Fraction?

9.9 as a fraction in lowest terms is 99/10. Quick tip: to verify the answer is correct, use a calculator to divide 99 by 10 and you should get 9.9.

How to Work Out 9.9 as a Fraction

The simple steps below will help you convert a decimal into a fraction. In this example we’ll demonstrate how to write 9.9 as a simplified fraction:

1. Turn 9.9 into a fraction dividing it by 1.
   9.9 1
2. To get rid of the decimal point, multiply the numerator and denominator by 10. Why 10? 9.9 has one digit after the decimal point, so you need to multiply by 10¹=10.
   9.9 1

   ×

   10 10

   =

   99 10
3. Because this fraction cannot be reduced any further, 9.9 as a fraction in simplest form is:
   99 10
4. Since 9.9 is greater than 1, the resulting fraction is an improper fraction. For this reason we can also write 99/10 as a mixed number:
   9

   9 10