What Is 1/5 + 2/5?

1/5 + 2/5 = 3/5, which is 0.6 as a decimal.

Result

Answer

\frac{1}{5} + \frac{2}{5} = \textcolor{#0b5c56}{\frac{3}{5}}

The sum is 3/5 in simplest form.

  • Decimal: \displaystyle 0.6
  • Percent: 60%

3 of 5 equal parts

Step-by-step solution

The problem

\frac{1}{5} + \frac{2}{5}

  1. Add the numerators. Keep the denominator 5.

    = \frac{1 + 2}{5} = \textcolor{#0b5c56}{\frac{3}{5}}

  2. Check that it can't be simplified. 3 and 5 have no common factor other than 1, so this is the simplest form.

    \text{GCF}(3, 5) = 1

All the working together

\begin{aligned} &\frac{1}{5} + \frac{2}{5} \\[8pt] &= \frac{1 + 2}{5} && \textcolor{#5b6660}{\textsf{add}} \\[8pt] &= \textcolor{#0b5c56}{\frac{3}{5}}\end{aligned}

The answer in other forms

Simplest form3/5
Decimal0.6
Percent60%
Same fractions2/5 − 1/5, 1/5 × 2/5, 1/5 ÷ 2/5

1/5 plus other fractions

SumAnswer
1/5 + 1/27/10
1/5 + 1/38/15
1/5 + 2/313/15
1/5 + 1/49/20
1/5 + 3/419/20
1/5 + 1/52/5
1/5 + 2/53/5
1/5 + 3/54/5
1/5 + 4/51
1/5 + 1/611/30
1/5 + 5/631/30
1/5 + 1/813/40
1/5 + 3/823/40
1/5 + 5/833/40
1/5 + 7/843/40

Frequently asked questions

What is 1/5 + 2/5?

1/5 + 2/5 = 3/5 (0.6 as a decimal).

How do you add 1/5 and 2/5?

Write both over a common denominator, add the numerators and simplify. The working above shows each step.

Other fractions, mixed numbers or up to five terms: use the Fraction Calculator.