Addition Worksheet

Solve.

1 a. ______ + 30 = 60
1 b. 30 + ______ = 70
2 a. ______ + 30 = 90
2 b. 20 + ______ = 90
3 a. 20 + ______ = 70
3 b. 90 + ______ = 110
4 a. ______ + 20 = 50
4 b. 90 + ______ = 140
5 a. ______ + 60 = 120
5 b. ______ + 40 = 60
6 a. ______ + 80 = 170
6 b. ______ + 50 = 110
7 a. ______ + 30 = 50
7 b. ______ + 90 = 130
8 a. 70 + ______ = 120
8 b. ______ + 30 = 80
9 a. ______ + 80 = 140
9 b. 20 + ______ = 30
10 a. 90 + ______ = 130
10 b. 30 + ______ = 50
Page 2

Answer Key

1 a. 30    
1 b. 40    
2 a. 60    
2 b. 70    
3 a. 50    
3 b. 20    
4 a. 30    
4 b. 50    
5 a. 60    
5 b. 20    
6 a. 90    
6 b. 60    
7 a. 20    
7 b. 40    
8 a. 50    
8 b. 50    
9 a. 60    
9 b. 10    
10 a. 40    
10 b. 20    


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