Addition Worksheet

Solve.

1 a. ______ + 60 + 10 = 150
1 b. 40 + 60 + ______ = 150
2 a. 70 + 70 + _________ = 150
2 b. 30 + ______ + 80 = 120
3 a. ______ + 70 + 80 = 180
3 b. ______ + 20 + 80 = 110
4 a. ______ + 10 + 30 = 110
4 b. 10 + ______ + 10 = 50
5 a. 30 + _________ + 90 = 210
5 b. 50 + ______ + 40 = 100
6 a. _________ + 30 + 60 = 140
6 b. 80 + _________ + 90 = 210
7 a. ______ + 90 + 10 = 130
7 b. 80 + 40 + ______ = 170
8 a. ______ + 30 + 90 = 200
8 b. 40 + ______ + 60 = 150
Page 2

Answer Key

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


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