Addition Worksheet

Solve.

1 a. ______ + 2 = 122
 
1 b. 523 + _________ = 529
 
2 a. _________ + 9 = 827
 
2 b. 600 + _________ = 872
 
3 a. 90 + _________ = 831
 
3 b. 8 + _________ = 466
 
4 a. _________ + 5 = 595
 
4 b. 30 + _________ = 508
 
5 a. 149 + _________ = 249
 
5 b. 733 + _________ = 763
 
6 a. _________ + 535 = 565
 
6 b. 665 + _________ = 865
 
7 a. 200 + _________ = 755
 
7 b. _________ + 3 = 824
 
8 a. _________ + 400 = 573
 
8 b. _________ + 4 = 716
 
9 a. _________ + 70 = 784
 
9 b. _________ + 2 = 875
 
10 a. 684 + _________ = 692
 
10 b. 10 + _________ = 634
 
Page 2

Answer Key

1 a. 120    
1 b. 6    
2 a. 818    
2 b. 272    
3 a. 741    
3 b. 458    
4 a. 590    
4 b. 478    
5 a. 100    
5 b. 30    
6 a. 30    
6 b. 200    
7 a. 555    
7 b. 821    
8 a. 173    
8 b. 712    
9 a. 714    
9 b. 873    
10 a. 8    
10 b. 624    


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