Addition Worksheet

Solve.

1 a. 2 + ______ + 10 = 3
 
 
1 b. (–7) + ______ + 10 = 5
 
 
2 a. 10 + ______ + (–3) = 5
 
 
2 b. ______ + (–4) + 0 = –6
 
 
3 a. 2 + ______ + (–8) = 0
 
 
3 b. ______ + (–4) + (–6) = –15
 
 
4 a. ______ + (–7) + 0 = –12
 
 
4 b. 2 + ______ + (–6) = –5
 
 
5 a. ______ + (–1) + 6 = 4
 
 
5 b. (–6) + ______ + (–6) = –13
 
 
6 a. (–5) + ______ + (–8) = –21
 
 
6 b. ______ + 8 + 9 = 7
 
 
7 a. ______ + (–8) + (–10) = –9
 
 
7 b. ______ + (–4) + (–8) = –15
 
 
8 a. (–9) + ______ + (–10) = –25
 
 
8 b. 8 + ______ + (–4) = 1
 
 
9 a. (–8) + ______ + 3 = –11
 
 
9 b. 4 + ______ + (–10) = –8
 
 
10 a. (–2) + ______ + 6 = 1
 
 
10 b. (–5) + 1 + ______ = –11
 
 
Page 2

Answer Key

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


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