What is the sum of 8 and 63?

What does it mean when someone asks you for the sum of 8 and 63? The sum is part of the addition equation displayed below.

addend + addend = sum

When someone asks "What is the sum of 8 and 63?" they mean that 8 is an addend and 63 is an addend in an addition equation.

Therefore, as you may have inferred, the sum of 8 and 63 is the same as 8 plus 63. Here is the addition equation with the answer:

8 + 63 = 71

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What is the sum of 8 and 64?
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