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3rd Math Ch. 2
Properties of addition
| Question | Answer |
|---|---|
| Associative Property of Addition | Grouping the addends does not change the sum. |
| estimate | To find an answer that is close to the exact answer. |
| decimal point | The symbol that goes before the amount of cents. |
| Commutative Property of Addition | The order in which the numbers are added does not change the sum. |
| dollar sign $ | The symbol that goes before the sum of dollars. |
| Identity Property of Addition | The sum of any number and zero is the number. |
| sum | The answer to an addition problem. |
| front-end estimation | When you add only the front digits of a number |
| regroup | To rename a number using place value. (to borrow ) |
| Cent sign | The symbol that goes after the sum of cents. |