Addition Worksheet

Solve.

1 a. 5 + 500 + _________ = 545
1 b. 8 + 70 + _________ = 578
2 a. 100 + _________ + 1 = 191
2 b. 700 + _________ + 0 = 720
3 a. _________ + 200 + 40 = 240
3 b. _________ + 60 + 900 = 968
4 a. 500 + _________ + 1 = 551
4 b. 0 + 10 + _________ = 610
5 a. _________ + 50 + 1 = 551
5 b. 800 + 50 + _________ = 854
6 a. _________ + 60 + 800 = 861
6 b. 800 + _________ + 5 = 805
7 a. _________ + 10 + 6 = 716
7 b. 200 + 10 + _________ = 212
Page 2

Answer Key

1 a. 40    
1 b. 500    
2 a. 90    
2 b. 20    
3 a. 0    
3 b. 8    
4 a. 50    
4 b. 600    
5 a. 500    
5 b. 4    
6 a. 1    
6 b. 0    
7 a. 700    
7 b. 2    


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