In mathematics, the sum is the result of adding two or more numbers or quantities together. It is a fundamental operation in arithmetic and is denoted by the plus sign (+).
If we have the numbers 3, 5, and 7, the sum of these numbers is found by adding them together: 3 + 5 + 7 = 15.
To calculate the sum of two or more numbers:
Remember to apply the properties of addition to simplify calculations and understand the relationship between numbers in a sum.
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