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Mod 5 Vocab
Study Mod 5 Vocab
| Term | Definition |
|---|---|
| counterexample | A statement or example that shows a conjecture is false. |
| cube root | One of three equal factors of a number. If a³ = b, then a is the cube root of b. The cube root of 64 is 4 since 4³ = 64. |
| inverse operations | Pairs of operations that undo each other. Addition and subtraction are inverse operations. Multiplication and division are inverse operations. |
| irrational number | A number that cannot be expressed as the ratio, a over b where a and b are integers and b ≠ 0. |
| 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 of a number. |
| radical sign | The symbol used to indicate a positive square root, −−√ . |
| real number | The set of rational numbers together with the set of irrational numbers. |
| square root | One of the two equal factors of a number. If a² = b, then a is the square root of b. A square root of 144 is 12 since 12² = 144. |
| truncating | A process of approximating a decimal number by eliminating all decimal places past a certain point without rounding. |
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