Unit 1 Vocabulary

3. A mathematical expression that contains at least one variable
5. Expressions that represent the same value
6. Terms with the same variables, with corresponding variables having the same exponent
8. A number that tells you have many times to multiply another number by itself
11. Anything times one equals itself
12. The numerical factor of a term
13. To choose a variable to represent an unknown value
17. The nearness of a measurement to the true value of the measure
18. Flipped fractions
19. A number, a variable, or a product or quotient of numbers and variables

1. A way to mathematically describe real-world situations and the factors that cause them
2. Anything plus zero equals itself
4. The distance a number is from zero on the number line; always positive
7. A rule for assigning a number to some characteristic or attribute; also called a unit or label
9. A mathematical phrase involving only numbers and mathematical operations
10. An expression with no like terms or parentheses
11. Two numbers with a product of one
14. A letter used to represent an unspecified number or value
15. In a power/exponent, the number being multiplied by itself
16. to find the value of an expression