Properties of Equality

Front

What is the Multiplication Property of Equality?

Back

If you multiply both sides of an equation by the same number, the two sides remain equal.

Front

What is the Division Property of Equality?

Back

If you divide both sides of an equation by the same non-zero number, the two sides remain equal.

Front

What is the Addition Property of Equality?

Back

If you add the same number to both sides of an equation, the two sides remain equal.

Front

What is the Subtraction Property of Equality?

Back

If you subtract the same number from both sides of an equation, the two sides remain equal.

Front

If y/4 = 5, what is y?

Back

y = 20 (using the Multiplication Property of Equality).

Front

If 2x - 5 = 10, what is 2x?

Back

2x = 15 (using the Addition Property of Equality).

Front

What property is used in the equation: y - 12 = 30, y - 12 + 12 = 30 + 12?

Back

Addition Property of Equality.

Front

What property is used in the equation: 25 + d = 36, 25 + d - 25 = 36 - 25?

Back

Subtraction Property of Equality.

Front

If a = b, what can you say about a + c and b + c?

Back

a + c = b + c (using the Addition Property of Equality).

Front

If a = b, what can you say about a - c and b - c?

Back

a - c = b - c (using the Subtraction Property of Equality).