Term
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Definition
| mental math method used to rewrite a number as the sum of numbers to form an easier problem |
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Term
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Definition
| adding and subtracting the same number to make the sum or difference easier to find |
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Term
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Definition
| counting up from the smaller number to find the difference of two numbers |
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Term
| Associative Property of Addition |
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Definition
| addends can be regrouped and the sum remains the same |
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Term
| Commutative Property of Addition |
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Definition
| numbers can be added in any order and the sum remains the same |
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Term
| Identy Property of Addition |
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Definition
| The sum of any numbers and zero is the number |
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Term
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Definition
| operations that undo each other |
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