What is the sum of 1 and 3?

The answer you get when you add 1 and 3 together is called the sum. The sum of 1 and 3 is displayed below:

4

In math terms, the sum of 1 and 3 would be written as follows:

1 + 3 = 4

When you need to find the sum of numbers such as 1 and 3, just remember that you need to add the numbers together to get the sum.

Sum Calculator
Here you can find the sum for other numbers:

What is the sum of 1 and 4?
The sum of 1 and 3 is not the only thing we calculated. Here is the next sum on our list that we calculated.