RWM101: Foundations of Real World Math

Identify the property being illustrated by each statement as either associative or commutative. Watch your spelling.

1. $5 + 4 = 4 + 5$
   
   
2. $2 + (3 + 7) = (2 + 3) + 7$
   
   
3. $5 + (1 + 2) + 4 = 5 + 1 + (2 + 4)$
   
   
4. $8 + (9 + 4) = 8 + (4 + 9)$
   
   
5. $15 + 7 = 7 + 15$
   
   
6. $(2 + 3) + 6 = 2 + (3 + 6)$
   
   
7. $(8 + 7) + 3 = 8 + (7 + 3)$
   
   
8. $4 + (9 + 1) = 4 + (1 + 9)$
   
   
9. $(2 + 4) + 3 + 11 = 2 + 4 + (3 + 11)$
   
   
10. $(5 + 2) + 7 = 5 + (2 + 7)$
    
    
11. $6 + 10 = 10 + 6$
    
    
12. $(5 + 8) + 9 = 9 + (5 + 8)$
    
    
13. $5 + (10 + 3) = 5 + (3 + 10)$
    
    
14. $8 + 1 = 1 + 8$
    
    
15. $2 + (3 + 4) = (2 + 3) + 4$
    
    
16. $3 + 0 + (7 + 5) = 3 + 0 + (5 + 7)$
    
    
17. $6 + (7 + 9) = (6 + 7) + 9$
    
    
18. $4 + (3 + 2) + 8 = (4 + 3) + 2 + 8$
    

Source: Saddleback College, https://www.saddleback.edu/faculty/Lperez/Algebra2Go/prealgebra/addition/add2AC.html
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