Properties and Strategies to Add and Subtract

What Property of Addition is being shown in this equation?

17 + 0

• Commutative Property

• Associative Property

• Identity Property

What Property of Addition is being shown in this equation?

16 + 22 = 22 + 16

• Commutative Property

• Associative Property

• Identity Property

What Property of Addition is being shown in this equation?

19 + (61 + 15) = (19 + 61) + 15

• Commutative Property

• Associative Property

• Identity Property

What Rule of Subtraction is being shown in this equation?

19 - 0 = 19

• Property of Equality

• Identity Property of Subtraction

What Rule of Subtraction is being shown in this equation?

754 - 754 = 0

• Property of Equality

• Identity Property of Subtraction

Find the unknown.

(5 + ____ ) + 2 = 5 + (9 + 2)

Find the unknown.

25 - ____= 0

Find the unknown.

____ + 0 = 19

Find the unknown.

37 - ____ = 37

Which number sentence represents the Commutative Property of Addition?

• 357 + 0 = 357

• (7 + 19) + 3 = 7 + (19 + 3)

• 36 + 14 = 14 + 36

• 79 - 79 = 0