Addition Worksheet

Solve.

1 a. ______ + 80 = 140
1 b. 20 + ______ = 110
2 a. 50 + ______ = 120
2 b. ______ + 40 = 110
3 a. 60 + ______ = 150
3 b. ______ + 80 = 120
4 a. 30 + ______ = 50
4 b. 70 + ______ = 130
5 a. ______ + 50 = 60
5 b. 90 + ______ = 180
6 a. ______ + 40 = 100
6 b. 30 + ______ = 70
7 a. 40 + ______ = 50
7 b. 90 + ______ = 150
8 a. ______ + 40 = 90
8 b. ______ + 40 = 70
9 a. 60 + ______ = 70
9 b. ______ + 50 = 130
10 a. ______ + 60 = 100
10 b. ______ + 30 = 80
Page 2

Answer Key

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


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