Addition Worksheet

Solve.

1 a. ______ + 70 = 90
1 b. 60 + ______ = 120
2 a. 10 + ______ = 30
2 b. ______ + 60 = 150
3 a. ______ + 10 = 20
3 b. ______ + 80 = 160
4 a. ______ + 10 = 50
4 b. ______ + 10 = 90
5 a. ______ + 50 = 100
5 b. 50 + ______ = 70
6 a. 10 + ______ = 50
6 b. ______ + 80 = 120
7 a. ______ + 50 = 80
7 b. ______ + 60 = 80
8 a. 60 + ______ = 110
8 b. ______ + 90 = 130
9 a. 20 + ______ = 90
9 b. 90 + ______ = 140
Page 2

Answer Key

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


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