Unit 2 (Equal Not Equal) Test Review 21-22

Front

What is the inverse operation of subtracting?

Back

Adding

Front

Ms. Powers is fundraising for her classroom. If she has already donated $20 and hopes to get another $10 each day, which equation models her fundraising goal of $200?

Back

20 + 10x = 200

Front

What is the first step to solve the equation 15x + 1 + 5x = 61?

Back

Combine like terms (15x + 5x = 20x)

Front

What do you do to solve the inequality -2x ≤ 10?

Back

Divide by -2

Front

How should you show your work to isolate the variable in the equation x - 62 = 123?

Back

Add 62 to each side.

Front

What is a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What does it mean to isolate a variable?

Back

To manipulate an equation so that the variable is on one side and all other terms are on the other.

Front

What is the purpose of combining like terms in an equation?

Back

To simplify the equation and make it easier to solve.

Front

What is an inequality?

Back

A mathematical statement that compares two expressions using symbols like <, >, ≤, or ≥.

Front

What does it mean to solve an equation?

Back

To find the value of the variable that makes the equation true.