Question

Write 0.4 as a fraction.

Answer 1

`0.4=(4)/(10)=(2)/(5)`

Answer 2

Using the place value chart we can see that the decimal 0.4 is four tenths, so we can write 0.4 as the fraction 4 out of 10 or
`(4)/(10)`. Notice however that
`(4)/(10)` is not in lowest terms so we need to divide both the numerator and denominator by the greatest common factor of 4 and 10 which is 5.

Therefore, 0.4 can be written as the fraction 2/5, which is in lowest terms.