Addition Worksheet

Solve.

1 a. ______ + (–5) + 9 = 12
1 b. 4 + 4 + ______ = 0
2 a. 0 + (–6) + ______ = –13
2 b. (–9) + (–8) + ______ = –19
3 a. 10 + ______ + 1 = 8
3 b. (–7) + ______ + 2 = –8
4 a. (–6) + (–10) + ______ = –20
4 b. ______ + 5 + (–3) = –6
5 a. ______ + 6 + 7 = 8
5 b. 6 + ______ + (–5) = –9
6 a. 10 + 4 + ______ = 4
6 b. (–4) + (–10) + ______ = –13
7 a. 6 + ______ + (–5) = –3
7 b. (–7) + ______ + (–8) = –18
8 a. 3 + (–4) + ______ = –10
8 b. ______ + (–3) + 3 = –10
Page 2

Answer Key

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


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