What is 1 3 equal to?

Great question! The expression '1 3' can be interpreted in a couple of ways, depending on the context. If you're referring to it as a mathematical expression, it could mean '1 plus 3', which equals 4. However, if it's meant as a fraction, it might refer to 'one-third', which is a different concept altogether.

Let’s break it down:

1. As an Addition: If you interpret '1 3' as '1 + 3', then the result is 4. This is a straightforward addition problem.
2. As a Fraction: If '1 3' is meant to represent a fraction, it could be interpreted as 1/3, which means one part of three equal parts. In decimal form, this is approximately 0.333.
3. In Mixed Numbers: If '1 3' is meant as a mixed number, it can be interpreted as 1 and 3/1, which is simply 4 as well.

So, depending on how you interpret '1 3', it could equal either 4 or represent the fraction 1/3. If you have more specific context or examples, feel free to share!