Addition Worksheet

Solve.

1 a. 519 + _________ = 609
 
1 b. 490 + _________ = 570
 
2 a. _________ + 30 = 529
 
2 b. 125 + ______ = 175
 
3 a. _________ + 40 = 312
 
3 b. 80 + _________ = 499
 
4 a. _________ + 362 = 372
 
4 b. _________ + 80 = 747
 
5 a. 825 + _________ = 834
 
5 b. _________ + 2 = 392
 
6 a. ______ + 3 = 159
 
6 b. 108 + ______ = 178
 
7 a. _________ + 523 = 532
 
7 b. _________ + 7 = 617
 
8 a. 629 + _________ = 634
 
8 b. _________ + 3 = 237
 
9 a. _________ + 80 = 414
 
9 b. _________ + 20 = 775
 
10 a. 100 + _________ = 742
 
10 b. _________ + 187 = 387
 
Page 2

Answer Key

1 a. 90    
1 b. 80    
2 a. 499    
2 b. 50    
3 a. 272    
3 b. 419    
4 a. 10    
4 b. 667    
5 a. 9    
5 b. 390    
6 a. 156    
6 b. 70    
7 a. 9    
7 b. 610    
8 a. 5    
8 b. 234    
9 a. 334    
9 b. 755    
10 a. 642    
10 b. 200    


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