30 plus what equals 60?

This is how to calculate "30 plus what equals 60?" In other words, 30 plus a number equals 60. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

30 + what = 60

To solve this equation, we first add -30 to each side of the equal sign like this:

30 - 30 + what = 60 - 30

Then, we do the calculation to get the answer to "30 plus what equals 60?" as follows:

What = 30

The answer to "30 plus what equals 60?" is 30. You know this answer is correct because 30 plus 30 equals 60.

Plus What Equals Calculator
Here you can calculate a similar problem:

30 plus what equals 61?
Do you think you can solve a similar problem on your own? Try to figure out the next problem on our list and then go here to check the answer.