Addition Worksheet

Solve.

1 a. 318 + _________ = 323
1 b. 326 + _________ = 335
2 a. _________ + 9 = 403
2 b. _________ + 7 = 556
3 a. _________ + 3 = 650
3 b. 6 + ______ = 110
4 a. _________ + 227 = 228
4 b. _________ + 8 = 924
5 a. _________ + 639 = 648
5 b. 5 + ______ = 191
6 a. 4 + _________ = 776
6 b. _________ + 215 = 222
7 a. 2 + ______ = 123
7 b. _________ + 415 = 416
8 a. _________ + 468 = 477
8 b. _________ + 4 = 213
9 a. _________ + 9 = 677
9 b. 311 + _________ = 318
10 a. 5 + _________ = 564
10 b. 934 + _________ = 937
Page 2

Answer Key

1 a. 5    
1 b. 9    
2 a. 394    
2 b. 549    
3 a. 647    
3 b. 104    
4 a. 1    
4 b. 916    
5 a. 9    
5 b. 186    
6 a. 772    
6 b. 7    
7 a. 121    
7 b. 1    
8 a. 9    
8 b. 209    
9 a. 668    
9 b. 7    
10 a. 559    
10 b. 3    


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