| Term | Definition |
|---|
| compensation | adding and subtracting the same number to make the sum or difference easier to find. |
| counting on | counting up from the smaller number to find the difference of 2 numbers. |
| breaking apart | mental math method used to rewrite a number as the sum of numbers to form an easier problem. |
| commutative property of addition | numbers can be added in any order and the sum remains the same. |
| associative property of addition | addends can be regrouped and the sum remains the same. |
| identity or zero property of addition | the sum of any number and zero is that number. |
| sum | the answer to an addition problem. |
| minuend | the first number in a subtraction problem. |
| difference | the answer to a subtraction problem. |
| addend | the numbers that are added together to find a sum. |
| subtrahend | the second number in a subtraction problem. |
| inverse operations | operations that undo each other (opposites) |
Combine with other sets
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