1. 7th Grade Math Vocabulary
Unit 2
7th Grade Math Vocabulary
Unit 2: Expressions & Equations

2. 09.17.2018 Agenda Ticket in the Door Ticket in the Door
Cornell Notes on Unit 2 (Expressions & Equations) Vocabulary.
Summary of Cornell notes
Format your Paper for Cornell notes on Unit 2 Vocabulary.
Name, Date, Period (Top right Corner)
Topic: Expressions & Equations
E.Q. What are the Key terms & symbols in regards to Expressions and Equations?

3. Unit 2 Algebraic Expression
Definition: A mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators (like add, subtract, multiply, and divide).
Model:

4. Unit 2
base
Definition: the number that is raised to a power or multiplied by itself the exponent number of times.
MODEL:

5. COMMUTATIVE PROPERTY OF ADDITION
Unit 2
Definition: This property states that order does not matter when you are adding.  
MODEL:

6. Commutative Property of Multiplication
Unit 2
Commutative Property of Multiplication
Definition: This property states that order does not matter when you are multiplying.
MODEL: 2 * 3 = 3 * 2

7. Definition: To combine, simplify or otherwise determine results.
Unit 2
EVALUATE
Definition: To combine, simplify or otherwise determine results.
MODEL:

8. Definition: terms that have the same variable combination.
Unit 2
LIKE TERMS
Definition: terms that have the same variable combination.
MODEL: 3x and 5x 2ab and -8ab

9. MULTIPLICATIVE IDENTITY
Unit 2
MULTIPLICATIVE IDENTITY
Definition: Two numbers whose product is 1. Also called reciprocals.
MODEL: 5 x 1 = 1 5

10. Definition: an amount or value.
Unit 2
QUANTITY
Definition: an amount or value.
MODEL: $30
or 15t, when t = 5 means 75.

11. Definition: The result from an addition problem.
Unit 2
SUM
Definition: The result from an addition problem.
MODEL: = 5
5 is the sum.

12. Definition: The result of the division of one quantity by another.
Unit 2
QUOTIENT
Definition: The result of the division of one quantity by another.
MODEL:

13. Definition: A letter used to represent an unknown quantity.
Unit 2
Variables
Definition: A letter used to represent an unknown quantity.
MODEL: x

14. Definition: The result of multiplication.
Unit 2
PRODUCT
Definition: The result of multiplication.
MODEL: 4 * 3 = 12
12 IS THE PRODUCT

15. Unit 2
EXPONENTS
Definition: A number placed above and to the right of another number to show that it has been raised to a power. 
MODEL:

16. UNit 2
Coefficient
Definition: The numerical factor in a term. The number next to the variable, multiplied by the variable.
Model:

17. UNit 2
Constant
Definition: A number with no variable next to it. A fixed value.
Model:

18. Distributive Property
UNit 2
Distributive Property
Definition: The Distributive Property says that multiplying a number by a group of numbers added together is the same as doing each multiplication separately.
Model:

19. UNit 2
Equation
Definition: When you set two expressions equal to each other. It implies that both sides of the equal sign are equivalent.
Model:

20. Equivalent Expression
UNit 2
Equivalent Expression
Definition: When two expressions have the same value.
Model: 2x = x + x

21. UNit 2 Factor Model: The factors of 42 are 6 and 7 or 2, 3, 7.
Definition: A number that can be divided from the given value evenly.
Model: The factors of 42 are
6 and 7 or 2, 3, 7.
3x = 3 * x So the factors of 3x are 3 and x.

22. UNit 2
Inequality
Definition: A statement that two values are not equal. Usually tells us which value is greater.
Model:

23. UNit 2 Linear Expression
Definition: An expression that has variables with the highest exponent being 1.
Model: 3x + 7

24. UNit 2
Maximum
Definition: The highest number or value in a given set or on a graph.
Model:

25. UNit 2
Minimum
Definition: The smallest value in a set or lowest point on a graph.
Model:

26. UNit 2 Numeric Expression
Definition: A group of known values that represent a situation.
Numeric Expression
Model:

27. Unit 2
Rational Number
Definition: A number that can be made into a fraction or ratio.
Model:

28. UNit 2
Term
Definition: A single number or variable, or numbers and variables multiplied together. Terms are separated by + or − signs.
Model:

29. Reference