Ch. 5 Lesson 1/2 Combine Like Terms + Evaluating Expressions

Front

What does it mean to combine like terms in an expression?

Back

Combining like terms means to simplify an expression by adding or subtracting terms that have the same variable raised to the same power.

Front

Evaluate the expression 5m + 7 if m = 5.

Back

32

Front

What is the first step in evaluating an expression with exponents?

Back

Substitute the value of the variable and then perform the exponentiation.

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Back

8

Front

What is the result of evaluating -4x + 5 if x = -3?

Back

17

Front

Evaluate the expression 2r + 1 if r = 3.

Back

7

Front

What is a variable in an algebraic expression?

Back

A variable is a symbol, often a letter, that represents a number that can change.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their given values.

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Front

Back