Name:______________ 1, Write each missing number. 

3 + 5 = + 3  5 + 4 = 4 + 
4 + = 4  + 0 = 6 
(3 + 5 ) + = 3 + (5 + 1)  + ( 2 + 6) = ( 2 + 2) + 6 
2, Write 2 math equations to show the commutative property of addition. ____________________________________________________ 

3, Find each sum. 

(3 + 5 ) + 3 =  9 + ( 4 + 2) = 
2 + ( 4 + 7) =  (6 + 2 ) + 3 = 
9+ 0 + 1 =  7 + 0 + 5 = 
4, Which property of addition is shown by 0 + 7 = 7 ? Explain your answer. __________________________________________________ __________________________________________________ 