Addition Worksheet

Solve.

1 a. 8 + (–1) + ______ = –1
 
 
1 b. (–9) + ______ + 2 = –17
 
 
2 a. (–2) + ______ + (–5) = –16
 
 
2 b. ______ + 3 + (–3) = 2
 
 
3 a. (–1) + ______ + (–7) = –10
 
 
3 b. 4 + ______ + (–10) = –10
 
 
4 a. 7 + ______ + (–10) = –13
 
 
4 b. (–4) + ______ + (–6) = –16
 
 
5 a. ______ + (–1) + (–1) = 5
 
 
5 b. ______ + 8 + (–1) = 0
 
 
6 a. 6 + ______ + 10 = 8
 
 
6 b. (–6) + (–3) + ______ = –13
 
 
7 a. ______ + 0 + (–7) = –8
 
 
7 b. ______ + (–4) + 4 = 9
 
 
8 a. (–1) + (–2) + ______ = –7
 
 
8 b. (–5) + (–2) + ______ = –17
 
 
9 a. (–8) + (–9) + ______ = –14
 
 
9 b. 0 + (–8) + ______ = –8
 
 
10 a. ______ + (–8) + 1 = 1
 
 
10 b. 10 + ______ + (–7) = –4
 
 
Page 2

Answer Key

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

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