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Module 5
| Question | Answer |
|---|---|
| counterexample | A statement or example that shows a conjecture is false. |
| cube root | One of three equal factors of a number. Is a^3 , the a is the cue root of . |
| 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/b, where 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 if rational numbers together with the set of irrational numbers |
| square root | One of the two equal factors of a number. If a^2 b, then a is the square root of b. The square root of 144 is 12^2 144. |
| truncating | A process of approximating a decimal number by eliminating all decimal places past a certain point without rounding. |
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