Addition Worksheet

Solve.

1 a. 80 + ______ = 140
1 b. 80 + ______ = 100
2 a. ______ + 80 = 130
2 b. 30 + ______ = 60
3 a. ______ + 60 = 120
3 b. 30 + ______ = 90
4 a. 50 + ______ = 60
4 b. 80 + ______ = 160
5 a. ______ + 50 = 110
5 b. ______ + 70 = 100
6 a. ______ + 60 = 90
6 b. ______ + 20 = 110
7 a. 10 + ______ = 40
7 b. ______ + 90 = 140
8 a. ______ + 90 = 150
8 b. 70 + ______ = 160
9 a. ______ + 20 = 70
9 b. ______ + 90 = 170
Page 2

Answer Key

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


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