Addition Worksheet

Solve.

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

Answer Key

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


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