Expressions Study Guide ADV 2024

Front

What is the expression for '5 less than the product of 7 and s'?

Back

7s - 5

Front

Evaluate the expression 5a + 7a - 8 if a = 4.

Back

40

Front

What property is illustrated by the equation 3(w + 4) = 3w + 12?

Back

Distributive Property

Front

Write a simplified expression for the total number of cats if Mrs. Thomas has x cats, Mr. Crawford has twice as many, and Mr. Dixon has 12 more than Mr. Crawford.

Back

6x + 12

Front

How do you express how much further Mrs. Lee walked than Mrs. Osborne if Mrs. Osborne walked (3x + 2) miles and Mrs. Lee walked (4x - 1) miles?

Back

x - 3

Front

What is the Distributive Property?

Back

The Distributive Property states that a(b + c) = ab + ac.

Front

What is an expression?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting numbers for the variables.

Front

What is a variable in mathematics?

Back

A variable is a symbol (usually a letter) that represents an unknown value.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.