1/5 as a Decimal

A fraction where the denominator (the bottom number) is a power of ten (such as 10, 100, 1000, etc). You can write decimal fractions with a decimal point (and no denominator), which makes it easier to do calculations like addition and multiplication on fractions.

How to Convert 1/5 as a Decimal

1/5 is expanded to 20/100 by multiplying the numerator by 20 and the denominator by 20.

  1           1 x  20             20
 ----  =   ----------  =  -------  = 0.2 
  5           5 x  20            100

Fraction to Decimal Method 2

Use log division to divide the fraction’s numerator by the fraction’s denominator.

Calculate 1/5 by a long division of 1 divided by 2:

5 |  10  | 0.2
     10 
    -----
      0

Therefore, 1/5 is 0.2 as a decimal.