Module 2 Vocabulary

2. The set of numbers for counting AND zero.
3. The symbol used to indicate a positive square root
7. Pairs of operations that undo each other. Addition and subtraction are inverse operations.
8. In repeating decimals, the line or bar placed over the digits that repeat.
9. The set of whole numbers and their opposites.
10. A number whose square root is a whole number.
13. One of three equal factors of a number.
14. a decimal in which one or more digits repeat
15. the set of numbers used for counting.
16. One of the two equal factors of a number.
18. a decimal where the repeating digit is zero.

1. the positive square root of a number
4. A number whose cube root is an integer. 27 is a perfect cube because its cube root is 3.
5. a number that cannot be expressed as the ratio a⁄b, where a and b are integers and b is not zero.
6. numbers that can be written as the ratio of two integers in which the denominator is not zero. All integers, fractions, mixed numbers, and percents are rational numbers.
11. A statement or example that shows a conjecture is false.
12. the set of rational numbers together with the set of irrational numbers
17. the most useful subject ever.
18. a process of approximating a decimal number by eliminating all decimal places past a certain point without rounding.