Properties of Equality

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.

Tags

CCSS.HSA.REI.A.1

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.

Tags

CCSS.HSA.REI.A.1

Front

Example of subtraction property of equality: 25 + d = 36, what is the next step?

Back

25 + d - 25 = 36 - 25.

Tags

CCSS.6.EE.B.7

Front

Example of addition property of equality: y - 12 = 30, what is the next step?

Back

y - 12 + 12 = 30 + 12.

Tags

CCSS.HSA.REI.A.1

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.

Tags

CCSS.HSA.REI.A.1

Front

What is the division property of equality?

Back

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

Tags

CCSS.HSA.REI.A.1

Front

Example of multiplication property of equality: 3x = 12, what is the next step?

Back

3x / 3 = 12 / 3.

Tags

CCSS.HSA.REI.A.1

Front

Example of division property of equality: 20 = 5y, what is the next step?

Back

20 / 5 = 5y / 5.

Tags

CCSS.HSA.REI.A.1

Front

What does it mean to isolate a variable?

Back

To get the variable alone on one side of the equation.

Tags

CCSS.6.EE.B.7

Front

Why is it important to keep equations balanced?

Back

To ensure that both sides of the equation represent the same value.

Tags

CCSS.HSA.REI.A.1