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

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?

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:

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

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

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

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

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

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

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

Definition: The result from an addition problem. Unit 2 SUM Definition: The result from an addition problem. MODEL: 2 + 3 = 5 5 is the sum.

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:

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

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

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:

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

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

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:

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:

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

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.

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

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

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

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

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

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

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

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