Addition Worksheet

Solve.

1 a. 60 + ______ = 150
1 b. ______ + 60 = 70
2 a. ______ + 80 = 140
2 b. 60 + ______ = 70
3 a. ______ + 30 = 110
3 b. ______ + 70 = 130
4 a. ______ + 60 = 120
4 b. 60 + ______ = 120
5 a. ______ + 30 = 90
5 b. ______ + 50 = 80
6 a. ______ + 40 = 90
6 b. 80 + ______ = 90
7 a. 50 + ______ = 90
7 b. ______ + 50 = 70
8 a. 90 + ______ = 100
8 b. ______ + 30 = 80
9 a. 40 + ______ = 50
9 b. 20 + ______ = 100
10 a. 20 + ______ = 90
10 b. 80 + ______ = 110
Page 2

Answer Key

1 a. 90    
1 b. 10    
2 a. 60    
2 b. 10    
3 a. 80    
3 b. 60    
4 a. 60    
4 b. 60    
5 a. 60    
5 b. 30    
6 a. 50    
6 b. 10    
7 a. 40    
7 b. 20    
8 a. 10    
8 b. 50    
9 a. 10    
9 b. 80    
10 a. 70    
10 b. 30    


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