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Module 5 vocab
| Term | Definition |
|---|---|
| counterexample | A statement or example that shows a conjecture is false. |
| cuberoot | One of three equal factors of a number. |
| inversive operations | Pairs of operations that undo each other. Addition and subtraction are inverse operations. Multiplication and division are inverse operations. |
| irrational numbers | A number that cannot be expressed as the ratio a/b, where a and b are inverse operations. |
| natural numbers | The set of numbers used for counting |
| perfect cube | A number whose cube root is an integer. 27 is a perfect cube because its cube root is 3 |
| perfect square | A number whose square root is a whole number. 25 is a perfect square because its square root is 5 |
| principal square root | The positive square root in a number |
| radical sign | A symbol used to indicate a positive square root |
| real numbers | The set of rational numbers together with the set of irrational numbers |
| square root | One of the two equal factors of a number. If a to the 2nd = b, then a is the square root of b. A square root of 144 is 12 since 12 to the second power =144 |
| truncating | A process of approximating a decimal number by eliminating all decimal places past a certain point without rounding. |
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