Addition Worksheet

Solve.

1 a. (–1) + ______ + (–2) = –10
 
 
1 b. 9 + (–6) + ______ = –5
 
 
2 a. 0 + (–1) + ______ = –2
 
 
2 b. (–9) + ______ + 1 = –17
 
 
3 a. (–7) + ______ + (–4) = –18
 
 
3 b. ______ + (–1) + (–3) = –4
 
 
4 a. (–4) + ______ + (–7) = –16
 
 
4 b. 1 + (–4) + ______ = –5
 
 
5 a. (–1) + ______ + 8 = 2
 
 
5 b. (–3) + ______ + (–10) = –18
 
 
6 a. (–2) + (–10) + ______ = –21
 
 
6 b. (–3) + (–3) + ______ = 3
 
 
7 a. ______ + 4 + (–5) = –1
 
 
7 b. ______ + (–10) + (–2) = –20
 
 
8 a. 10 + (–1) + ______ = 8
 
 
8 b. (–2) + 3 + ______ = –5
 
 
9 a. (–10) + (–4) + ______ = –16
 
 
9 b. ______ + (–5) + (–8) = –13
 
 
10 a. (–8) + (–6) + ______ = –7
 
 
10 b. ______ + 6 + (–1) = 10
 
 
Page 2

Answer Key

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

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