What is the sum of 1 and 40?

What does it mean when someone asks you for the sum of 1 and 40? The sum is part of the addition equation displayed below.

addend + addend = sum

When someone asks "What is the sum of 1 and 40?" they mean that 1 is an addend and 40 is an addend in an addition equation.

Therefore, as you may have inferred, the sum of 1 and 40 is the same as 1 plus 40. Here is the addition equation with the answer:

1 + 40 = 41

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What is the sum of 1 and 41?
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