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Vocabulary
3rd Grade Math Vocabulary
| Term | Definition |
|---|---|
| unit fraction | only including one part, always has a numerator of 1 |
| equal shares | same size pieces |
| numerator | number counted, top number in a fraction |
| denominator | number that makes 1 whole, bottom number in fraction |
| rounding | a strategy for estimation to a certain place value |
| compatible numbers | a strategy for estimation using number that are easy to use mental math with |
| fraction of a whole | part of 1 whole |
| fraction of a group | part of 1 group |
| equivalent fractions | two or more fractions representing the same amount, or equal amounts |
| same numerator strategy | if the numerator is the same, look at the size of the pieces |
| same denominator strategy | when the sizes are the same, compare how many of each you have |
| commutative property of addition | changing the order doesn't change the sum |
| associative property of addition | grouping numbers differently doesn't change the sum |
| sum | solution or answer to an addition problem |