What Is 2/5 + 2/5?

2/5 + 2/5 = 4/5, which is 0.8 as a decimal.

Result

Answer

\frac{2}{5} + \frac{2}{5} = \textcolor{#0b5c56}{\frac{4}{5}}

The sum is 4/5 in simplest form.

  • Decimal: \displaystyle 0.8
  • Percent: 80%

4 of 5 equal parts

Step-by-step solution

The problem

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

  1. Add the numerators. Keep the denominator 5.

    = \frac{2 + 2}{5} = \textcolor{#0b5c56}{\frac{4}{5}}

  2. Check that it can't be simplified. 4 and 5 have no common factor other than 1, so this is the simplest form.

    \text{GCF}(4, 5) = 1

All the working together

\begin{aligned} &\frac{2}{5} + \frac{2}{5} \\[8pt] &= \frac{2 + 2}{5} && \textcolor{#5b6660}{\textsf{add}} \\[8pt] &= \textcolor{#0b5c56}{\frac{4}{5}}\end{aligned}

The answer in other forms

Simplest form4/5
Decimal0.8
Percent80%
Same fractions2/5 × 2/5

2/5 plus other fractions

SumAnswer
2/5 + 1/29/10
2/5 + 1/311/15
2/5 + 2/316/15
2/5 + 1/413/20
2/5 + 3/423/20
2/5 + 1/53/5
2/5 + 2/54/5
2/5 + 3/51
2/5 + 4/56/5
2/5 + 1/617/30
2/5 + 5/637/30
2/5 + 1/821/40
2/5 + 3/831/40
2/5 + 5/841/40
2/5 + 7/851/40

Frequently asked questions

What is 2/5 + 2/5?

2/5 + 2/5 = 4/5 (0.8 as a decimal).

How do you add 2/5 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.