.4 as a Fraction

Converting .4 to a fraction requires multiplying 0.4/1 by 10/10 resulting into 4/10. This fraction can be further reduced to 2/5.

What Is .4 as a Fraction?

The value of .4 as a fraction is 2/5. This can be verified by using a calculator app on which you can divide 2 by 5, giving you the answer: 0.4.

How to Write .4 as a Fraction

Follow the next steps and learn how to turn a decimal into a fraction. In this case, we’ll show you how to write .4 as a simplified fraction:

1. Start with dividing 0.4 by 1. You can turn any number into a fraction by doing this.
   0.4 1
2. Then multiply both the numerator and denominator by 10. This is needed to get rid of the decimal point. Since .4 has only one digit after the decimal point, you have to multiply it by 10¹=10.
   0.4 1

   ×

   10 10

   =

   4 10
3. After calculating the Greatest Common Divisor of 4 and 10, which is 2, divide 4 and 10 by it (GCD).
   4 ÷ 2 10 ÷ 2
4. Finally, .4 as a fraction in simplest form is:
   2 5