Addition Worksheet

Solve.

1 a. (–3) + 4 + ______ = –4
 
 
1 b. ______ + 3 + (–4) = –4
 
 
2 a. 10 + (–6) + ______ = 10
 
 
2 b. 7 + (–6) + ______ = 0
 
 
3 a. (–9) + ______ + (–1) = –1
 
 
3 b. ______ + (–3) + 8 = –5
 
 
4 a. (–10) + (–4) + ______ = –23
 
 
4 b. (–10) + 10 + ______ = –4
 
 
5 a. ______ + (–8) + (–9) = –12
 
 
5 b. (–7) + (–9) + ______ = –13
 
 
6 a. 2 + (–10) + ______ = –8
 
 
6 b. ______ + (–2) + 1 = –5
 
 
7 a. ______ + 9 + 1 = 1
 
 
7 b. (–5) + 5 + ______ = –2
 
 
8 a. (–8) + ______ + (–4) = –19
 
 
8 b. (–9) + 10 + ______ = 1
 
 
9 a. 2 + (–3) + ______ = –7
 
 
9 b. 2 + ______ + (–1) = –3
 
 
10 a. (–5) + ______ + (–9) = –16
 
 
10 b. ______ + (–10) + (–6) = –21
 
 
Page 2

Answer Key

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

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