This is how to calculate "4 plus what equals 10?" In other words, 4 plus a number equals 10. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

**4 + what = 10**

To solve this equation, we first add -4 to each side of the equal sign like this:

**4 - 4 + what = 10 - 4**

Then, we do the calculation to get the answer to "4 plus what equals 10?" as follows:

**What = 6**

The answer to "4 plus what equals 10?" is 6. You know this answer is correct because 4 plus 6 equals 10.

**Plus What Equals Calculator**

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**4 plus what equals 11?**

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