Addition Worksheet

Solve.

1 a. (–10) + (–9) + ______ = –9
1 b. 4 + ______ + (–8) = –7
2 a. 6 + ______ + (–9) = –6
2 b. (–9) + (–7) + ______ = –21
3 a. ______ + (–7) + 0 = –8
3 b. ______ + (–10) + (–3) = –13
4 a. ______ + (–5) + (–10) = –9
4 b. (–9) + 4 + ______ = 1
5 a. ______ + (–8) + (–8) = –26
5 b. (–3) + (–5) + ______ = 0
6 a. 10 + ______ + (–7) = –2
6 b. (–1) + 7 + ______ = 7
7 a. (–7) + (–4) + ______ = –14
7 b. ______ + 0 + 1 = –9
8 a. 0 + ______ + (–10) = –10
8 b. 3 + ______ + (–9) = –7
Page 2

Answer Key

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


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