Addition Worksheet

Solve.

1 a. 500 + _________ + 6 = 516
1 b. _________ + 30 + 900 = 935
2 a. 6 + 40 + _________ = 246
2 b. 5 + 30 + _________ = 335
3 a. 0 + 700 + _________ = 750
3 b. _________ + 3 + 500 = 573
4 a. 70 + 1 + _________ = 571
4 b. 0 + 50 + _________ = 550
5 a. 8 + _________ + 700 = 708
5 b. _________ + 6 + 400 = 476
6 a. 5 + _________ + 80 = 285
6 b. 100 + 0 + ______ = 107
7 a. _________ + 50 + 9 = 859
7 b. _________ + 7 + 900 = 927
Page 2

Answer Key

1 a. 10    
1 b. 5    
2 a. 200    
2 b. 300    
3 a. 50    
3 b. 70    
4 a. 500    
4 b. 500    
5 a. 0    
5 b. 70    
6 a. 200    
6 b. 7    
7 a. 800    
7 b. 20    


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