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Mod 5 vocab

Module 5 vocabulary

TermDefinition
counterexample A statement or example that shows a conjecture is false.
cube root One of three equal factors of a number. If A to the third = B, than A is the cube root of B. The cube root of 64 is 4 since 4 cubed =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 can not be expressed as the ratio a/b, a and b are integers and b cannot = 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 a to the 2 power = b, then a is the square root of b. A square of 144 is 12 since 12 to the 2 power = 144.
truncating A process of approximating a decimal number by eliminating all decimal places past a certain point without rounding.
Created by: user-1981834
 



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