Addition Worksheet

Solve.

1 a. _________ + 107 = 707
 
1 b. 2 + ______ = 108
 
2 a. 70 + _________ = 699
 
2 b. 446 + _________ = 455
 
3 a. 678 + _________ = 708
 
3 b. _________ + 692 = 695
 
4 a. 363 + _________ = 370
 
4 b. 100 + _________ = 899
 
5 a. 360 + _________ = 363
 
5 b. 60 + _________ = 495
 
6 a. _________ + 465 = 470
 
6 b. _________ + 356 = 556
 
7 a. _________ + 90 = 549
 
7 b. _________ + 3 = 232
 
8 a. _________ + 100 = 220
 
8 b. _________ + 100 = 894
 
9 a. 5 + _________ = 701
 
9 b. _________ + 60 = 393
 
10 a. _________ + 203 = 213
 
10 b. _________ + 215 = 275
 
Page 2

Answer Key

1 a. 600    
1 b. 106    
2 a. 629    
2 b. 9    
3 a. 30    
3 b. 3    
4 a. 7    
4 b. 799    
5 a. 3    
5 b. 435    
6 a. 5    
6 b. 200    
7 a. 459    
7 b. 229    
8 a. 120    
8 b. 794    
9 a. 696    
9 b. 333    
10 a. 10    
10 b. 60    


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