Addition Worksheet

Solve.

1 a. ______ + (–9) + (–3) = –13
 
 
1 b. ______ + (–5) + (–5) = –9
 
 
2 a. 9 + ______ + (–9) = –1
 
 
2 b. 7 + (–1) + ______ = 1
 
 
3 a. ______ + (–7) + (–3) = –7
 
 
3 b. 8 + (–7) + ______ = –2
 
 
4 a. (–8) + ______ + 0 = –16
 
 
4 b. (–5) + ______ + 1 = –14
 
 
5 a. ______ + (–4) + (–3) = –12
 
 
5 b. ______ + (–1) + (–7) = –4
 
 
6 a. ______ + (–3) + 0 = –7
 
 
6 b. ______ + (–2) + (–7) = –11
 
 
7 a. 10 + (–5) + ______ = 2
 
 
7 b. ______ + 10 + (–3) = 1
 
 
8 a. ______ + 5 + (–8) = 5
 
 
8 b. (–5) + 2 + ______ = –11
 
 
9 a. ______ + (–4) + 10 = 1
 
 
9 b. (–8) + ______ + 0 = –18
 
 
10 a. (–3) + ______ + 6 = –2
 
 
10 b. (–7) + (–5) + ______ = –6
 
 
Page 2

Answer Key

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

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