3.9 as a Fraction

39/10

How to convert 3.9 to a fraction

3.9 as a fraction in simplest form is 39/10.

  1. Count the decimal places

    3.9 has 1 decimal place. The denominator is 10^1 = 10.

  2. Remove the decimal point

    Move the digits after the decimal into the numerator: 39/10.

  3. Check if the fraction can be simplified

    39/10 is already in simplest form.

  4. Express as a mixed number

    39 รท 10 = 3 with remainder 9, written as 3 9/10.