Unit 8

What property changes the "order" of the addends

• The Identity Property of Zero

• The Commutative Property of Addition

• The Commutative Property of Multiplication

• The Associative Property of Addition

The Associative Property allows you to change the __________

This property states that any number added to zero is the same number

• Associative Property

• Identity (Zero) Property of Addition

• Commutative Property

• The Ones Property

If you were to do the add on strategy for 325 + 134, how would you split up the 134?

• 134

• 100 +34

• 100 +3 +4

• 100 +30 +4

If you were to do the add on strategy for 125 + 104, how would you split up the 104?

• 100 + 40 + 0

• 1 + 0 + 4

• 100 + 10 + 4

• 100 + 4

Which property is being shown: 3 + 4 + 2 = 2 + 3 + 4

• Commutative Property of Addition

• Associative Property of Addition

Which Property is being show: 0 + 9 =

• Commutative Property of Addition

• Identity Property of Addition

• Associative Property of Addition

Fill in the missing number: 34 + 21 = _____ + 34

• 34

• 55

• 21

Fill in the missing number: 34 + (2 + 28) = ( ____+ 28) + 34

• 34

• 28

• 30

• 2

Which TWO strategies did we learn for Mental Math for Addition?

• Skip Counting and Arrays

• Make Ten and Skip Counting

• Make Ten and Adding on

• Open Number Line and Arrays