0.4 as a Fraction

2/5

How to convert 0.4 to a fraction

0.4 as a fraction in simplest form is 2/5.

  1. Count the decimal places

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

  2. Remove the decimal point

    Move the digits after the decimal into the numerator: 4/10.

  3. Find the greatest common divisor (GCD)

    GCD(4, 10) = 2.

  4. Divide by the GCD to simplify

    4 ÷ 2 = 2 and 10 ÷ 2 = 5, so the simplified fraction is 2/5.