What is the sum of 42 and 81?

The answer you get when you add 42 and 81 together is called the sum. The sum of 42 and 81 is displayed below:

123

In math terms, the sum of 42 and 81 would be written as follows:

42 + 81 = 123

When you need to find the sum of numbers such as 42 and 81, just remember that you need to add the numbers together to get the sum.

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