Addition Worksheet

Solve.

1 a. ______ + 90 = 130
1 b. ______ + 80 = 170
2 a. ______ + 10 = 30
2 b. 40 + ______ = 130
3 a. 10 + ______ = 40
3 b. ______ + 20 = 40
4 a. ______ + 40 = 100
4 b. ______ + 50 = 90
5 a. ______ + 50 = 140
5 b. 60 + ______ = 70
6 a. 70 + ______ = 90
6 b. ______ + 90 = 180
7 a. ______ + 30 = 110
7 b. ______ + 40 = 50
8 a. ______ + 60 = 150
8 b. 20 + ______ = 100
9 a. 30 + ______ = 110
9 b. ______ + 70 = 100
Page 2

Answer Key

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


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