Properties of Operations

Properties of Operations

Lesson 1-2

Commutative Property of Addition

The order in which numbers are added does not change the sum of the numbers.

Multiple Choice

Which problem shows the Commutative Property of Addition?

• 13 + 36 = 36 + 13

• 12 x 10 = 10 x 12

• 27 + 0 = 27

• 3 + (2 + 6) = (3 + 2) + 6

Commutative Property of Multiplication

The order in which numbers are multiplied does not change the product of the numbers.

Multiple Choice

Which problem shows the Commutative Property of Multiplication?

• 1 x 3 = 3

• (9 x 3) x 6 = 9 x (3 x 6)

• 7 x 11 = 11 x 7

• 8 + 12 = 12 + 8

Associative Property of Addition

The way numbers are grouped does not affect the sum.

Multiple Choice

Which problem shows the Associative Property of Addition?

• 13 + 0 = 13

• 2 x (4 x 5) = (2 x 4) x 5

• 4 x 1 = 4

• 2 + (8 + 10) = (2 + 8) +10

Associative Property of Multiplication

The way numbers are grouped does not affect the product.

Multiple Choice

Which problem shows the Associative Property of Multiplication?

• 2 x (4 x 5) = (2 x 4) x 5

• 2 + (8 + 10) = (2 + 8) +10

• 9 x 8 = 8 x 9

• 10 + 0 = 10

Identity Property of Addition

The sum of any number and zero is that number.

Multiple Choice

Which problem shows the Identity Property of Addition?

• 13 x 1 = 13

• 6 + 0 = 6

• 10 x 10 = 100

• 3 x 4 = 4 x 3

Identity Property of Multiplication

The product of a number and one is that number.

Multiple Choice

Which problem shows the Identity Property of Multiplication?

• 5 + 0 = 5

• 5 x (3 x 2) = (5 x 3) x 2

• 1 x 5 = 5

• 6 + 4 = 4 + 6

Let's try to identify the property!

Multiple Choice

What property is shown...

19 + (42 + 8) = (19 + 42) + 8

• Associative

• Commutative

• Identity

Multiple Choice

What property is shown...

12 + 8 = 8 + 12

• Associative

• Commutative

• Identity

Multiple Choice

What property is shown...

42 x 8 = 42 x 8 x 1

• Associative

• Commutative

• Identity

Multiple Choice

What property is shown...

32 x 85 = 85 x 32

• Associative

• Commutative

• Identity

Let's find the missing number!

Multiple Choice

Find the missing number:

19 + (42 + 8) = (__ + 42) + 8

• 1

• 8

• 19

• 42

Multiple Choice

Find the missing number:

12 + 8 = __ + 12

• 0

• 8

• 12

• 16

Multiple Choice

Find the missing number:

36 = 36 + __

• 0

• 1

• 2

• 3

Multiple Choice

Find the missing number:

11 = 1 x __

• 0

• 1

• 9

• 11

Multiple Choice

Find the missing number:

32 x 85 = __ x 32

• 85

• 90

• 95

• 100

Let's check in!

Poll

How do you feel identifying the property when given a problem?

Poll

How do you feel determining the missing value in a given property?

Poll

Would you like to work more on this skill in small group or independent meetings?

• Yes

• No