Addition Worksheet

Solve.

1 a. 78 + _________ + 225 = 323
 
 
 
 
 
 
 
1 b. 300 + 59 + _________ = 431
 
 
 
 
 
 
 
2 a. 25 + _________ + 69 = 410
 
 
 
 
 
 
 
2 b. 16 + _________ + 264 = 361
 
 
 
 
 
 
 
3 a. _________ + 228 + 98 = 349
 
 
 
 
 
 
 
3 b. _________ + 21 + 374 = 471
 
 
 
 
 
 
 
4 a. 92 + _________ + 206 = 394
 
 
 
 
 
 
 
4 b. 43 + 31 + _________ = 391
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. 20    
1 b. 72    
2 a. 316    
2 b. 81    
3 a. 23    
3 b. 76    
4 a. 96    
4 b. 317    


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