Difference between commutative and identity property

Which one of the following illustrates the Commutative Property of Addition?

• 5 + 7 = 7 + 5

• 5 + 7 = 4 + 8

• 5 + 7 = 3 + 9

• 5 + 7 = 10 + 2

Using the commutative property of addition I know if

8 + 4 = 12, that 4+8 =

• 12

• 3

• 4

• 14

One example of the commutative property of addition is...

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Which of the following illustrates the identity property of addition?

• 9+9= 18

• 10+1= 11

• 10+1=11, 1+10=11

• 1000+0= 1000

One example of the identity property of addition is...

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