Addition Worksheet

Solve.

1 a. ______ + 40 = 170
1 b. 115 + ______ = 175
2 a. _________ + 20 = 252
2 b. _________ + 30 = 233
3 a. _________ + 50 = 557
3 b. 123 + ______ = 193
4 a. 280 + _________ = 290
4 b. 134 + ______ = 174
5 a. _________ + 40 = 986
5 b. 319 + _________ = 379
6 a. 434 + _________ = 464
6 b. _________ + 50 = 285
7 a. 311 + _________ = 331
7 b. 401 + _________ = 451
8 a. 831 + _________ = 851
8 b. 407 + _________ = 477
9 a. 602 + _________ = 652
9 b. 135 + ______ = 185
10 a. _________ + 50 = 452
10 b. _________ + 10 = 286
Page 2

Answer Key

1 a. 130    
1 b. 60    
2 a. 232    
2 b. 203    
3 a. 507    
3 b. 70    
4 a. 10    
4 b. 40    
5 a. 946    
5 b. 60    
6 a. 30    
6 b. 235    
7 a. 20    
7 b. 50    
8 a. 20    
8 b. 70    
9 a. 50    
9 b. 50    
10 a. 402    
10 b. 276    


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