Addition Worksheet

Solve.

1 a. 232 + _________ = 282
1 b. _________ + 30 = 592
2 a. 409 + _________ = 449
2 b. 246 + _________ = 296
3 a. 122 + ______ = 192
3 b. 140 + ______ = 160
4 a. 310 + _________ = 370
4 b. 108 + ______ = 198
5 a. 864 + _________ = 894
5 b. 343 + _________ = 363
6 a. _________ + 20 = 398
6 b. ______ + 10 = 175
7 a. 539 + _________ = 569
7 b. _________ + 10 = 320
8 a. 348 + _________ = 398
8 b. _________ + 30 = 359
9 a. 337 + _________ = 347
9 b. 233 + _________ = 273
10 a. _________ + 30 = 552
10 b. 145 + ______ = 195
Page 2

Answer Key

1 a. 50    
1 b. 562    
2 a. 40    
2 b. 50    
3 a. 70    
3 b. 20    
4 a. 60    
4 b. 90    
5 a. 30    
5 b. 20    
6 a. 378    
6 b. 165    
7 a. 30    
7 b. 310    
8 a. 50    
8 b. 329    
9 a. 10    
9 b. 40    
10 a. 522    
10 b. 50    


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