Addition Worksheet

Solve.

1 a. _________ + 30 + 200 = 237
1 b. _________ + 10 + 600 = 619
2 a. 7 + 0 + _________ = 507
2 b. _________ + 8 + 900 = 968
3 a. 500 + 20 + _________ = 520
3 b. 20 + 6 + _________ = 226
4 a. _________ + 3 + 400 = 453
4 b. _________ + 70 + 500 = 573
5 a. _________ + 3 + 500 = 543
5 b. 2 + 40 + _________ = 742
6 a. 60 + 4 + _________ = 564
6 b. _________ + 40 + 800 = 840
7 a. 8 + 50 + _________ = 858
7 b. _________ + 4 + 600 = 694
Page 2

Answer Key

1 a. 7    
1 b. 9    
2 a. 500    
2 b. 60    
3 a. 0    
3 b. 200    
4 a. 50    
4 b. 3    
5 a. 40    
5 b. 700    
6 a. 500    
6 b. 0    
7 a. 800    
7 b. 90    


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