Addition Worksheet

Solve.

1 a. _________ + 618 = 668
 
1 b. _________ + 50 = 388
 
2 a. 10 + ______ = 118
 
2 b. 5 + _________ = 402
 
3 a. 90 + _________ = 266
 
3 b. _________ + 200 = 464
 
4 a. 398 + _________ = 406
 
4 b. _________ + 307 = 309
 
5 a. 282 + _________ = 382
 
5 b. _________ + 772 = 774
 
6 a. _________ + 173 = 253
 
6 b. 80 + _________ = 320
 
7 a. 292 + _________ = 302
 
7 b. 178 + _________ = 778
 
8 a. _________ + 7 = 777
 
8 b. 20 + _________ = 678
 
9 a. 426 + _________ = 436
 
9 b. 5 + _________ = 558
 
10 a. _________ + 10 = 373
 
10 b. 100 + _________ = 416
 
Page 2

Answer Key

1 a. 50    
1 b. 338    
2 a. 108    
2 b. 397    
3 a. 176    
3 b. 264    
4 a. 8    
4 b. 2    
5 a. 100    
5 b. 2    
6 a. 80    
6 b. 240    
7 a. 10    
7 b. 600    
8 a. 770    
8 b. 658    
9 a. 10    
9 b. 553    
10 a. 363    
10 b. 316    


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