81 plus what equals 88?

This is how to calculate "81 plus what equals 88?" In other words, 81 plus a number equals 88. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

81 + what = 88

To solve this equation, we first add -81 to each side of the equal sign like this:

81 - 81 + what = 88 - 81

Then, we do the calculation to get the answer to "81 plus what equals 88?" as follows:

What = 7

The answer to "81 plus what equals 88?" is 7. You know this answer is correct because 81 plus 7 equals 88.

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

81 plus what equals 89?
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.