Expressions and Equations Review

Front

Translate the sentence into an equation: Seven subtracted from n is 18.

Back

n - 7 = 18

Front

Translate the following: "$3 subtracted from the cost of a book"

Back

b - 3

Front

Evaluate the expression if a = 3 and b = 4: 2a + 8

Back

14

Front

How many terms in the following expression: 5x + 3y - 15 + x

Back

4

Front

Translate this sentence into an equation: The quotient of LeBron’s score and 3 is 10. Use the variable s to represent LeBron’s score.

Back

Front

What is an expression?

Back

A combination of numbers, variables, and operators (like +, -, *, /) without an equality sign.

Front

What is an equation?

Back

A mathematical statement that asserts the equality of two expressions, containing an equality sign.

Front

Define a variable in mathematics.

Back

A symbol, often a letter, that represents an unknown value.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting numbers for variables.

Front

What is a term in an expression?

Back

A single mathematical expression that can be a number, variable, or the product of numbers and variables.