Addition Worksheet

Solve.

1 a. 0 + 8 + _________ = 108
1 b. _________ + 3 + 300 = 343
2 a. 1 + ______ + 100 = 121
2 b. _________ + 10 + 600 = 616
3 a. _________ + 0 + 300 = 380
3 b. 3 + ______ + 100 = 133
4 a. ______ + 70 + 4 = 174
4 b. 3 + 20 + _________ = 223
5 a. _________ + 10 + 900 = 918
5 b. 0 + 60 + _________ = 360
6 a. 3 + _________ + 600 = 623
6 b. 4 + 600 + _________ = 684
7 a. 0 + _________ + 900 = 901
7 b. 6 + 500 + _________ = 556
Page 2

Answer Key

1 a. 100    
1 b. 40    
2 a. 20    
2 b. 6    
3 a. 80    
3 b. 30    
4 a. 100    
4 b. 200    
5 a. 8    
5 b. 300    
6 a. 20    
6 b. 80    
7 a. 1    
7 b. 50    


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