Unit 2 Vocabulary
1. Counting (natural) numbers 9. Open number line
2. Integers 10. Tick marks
3. Order numbers 11. Ascending
4. Place value 12. Descending
5. Rational numbers 13. Percent
6. Whole numbers 14. Positive rational numbers
7. Repeating decimal 15. Interval
8. Venn diagram
Counting (natural) numbers: the set of positive numbers that begins at one and increases by increments of one each time (1, 2, 3, 4, …, n)
Integers: the set of counting (natural) numbers, their opposites, and zero (-n, …., -3, -2, -1, 0, 1, 2, 3, …, n)
Order numbers: to arrange a set of numbers based on their numerical value
Place value: the value of a digit as determined by its location in a number such as ones, tens, hundreds, one thousands, ten thousands, etc.
Rational numbers: the set of numbers that can be expressed as a fraction a/b, where a and b are integers and b≠0, which includes the subsets of integers, whole numbers, and counting (natural) numbers (-3, -1/2, 0, 2, etc.)
Whole numbers: the set of counting (natural) numbers and 0 (0, 1, 2, 3, …, n)
Repeating decimal: the decimal form of a rational number; a decimal number that, after a certain point, consists of a group of one or more digits repeated.
Venn diagram: a diagram that uses circles to represent sets and their relationships
Open number line: a number line with no numbers or markers; (also called an empty number line)
Tick marks: marks on a number line that indicates where the numbers are located
Ascending: moving upward or rising
Descending: to move or come down
Percent: a part of a whole expressed in hundredths
Positive rational numbers: the set of numbers that can be expressed as a fraction a/b, where a and b are whole numbers and b≠0, which includes the subsets of whole numbers and counting (natural) numbers
(Ex: 0, 2, ¾, etc)
Interval: the distance or space between values; the set of points between two numbers.