Addition Worksheet

Solve.

1 a. 5 + ______ + 5 = 1
 
 
1 b. 3 + (–6) + ______ = –4
 
 
2 a. 9 + ______ + 6 = 12
 
 
2 b. (–5) + ______ + 10 = –5
 
 
3 a. (–8) + ______ + 9 = –6
 
 
3 b. (–1) + (–6) + ______ = –14
 
 
4 a. ______ + (–6) + (–9) = –14
 
 
4 b. ______ + (–9) + (–6) = –23
 
 
5 a. 6 + (–8) + ______ = 4
 
 
5 b. (–10) + (–10) + ______ = –29
 
 
6 a. ______ + (–6) + 0 = –7
 
 
6 b. ______ + (–10) + (–5) = –10
 
 
7 a. (–1) + (–1) + ______ = –2
 
 
7 b. (–7) + ______ + 10 = –7
 
 
8 a. 2 + (–10) + ______ = –7
 
 
8 b. 8 + (–2) + ______ = –4
 
 
9 a. ______ + 10 + (–9) = 8
 
 
9 b. ______ + (–1) + (–9) = –10
 
 
10 a. 10 + ______ + (–4) = 0
 
 
10 b. ______ + (–9) + 10 = –1
 
 
Page 2

Answer Key

1 a. (–9)    
1 b. (–1)    
2 a. (–3)    
2 b. (–10)    
3 a. (–7)    
3 b. (–7)    
4 a. 1    
4 b. (–8)    
5 a. 6    
5 b. (–9)    
6 a. (–1)    
6 b. 5    
7 a. 0    
7 b. (–10)    
8 a. 1    
8 b. (–10)    
9 a. 7    
9 b. 0    
10 a. (–6)    
10 b. (–2)    

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