Addition Worksheet

Solve.

1 a. 130 + ______ = 150
1 b. 177 + ______ = 187
2 a. 329 + _________ = 389
2 b. _________ + 20 = 376
3 a. _________ + 30 = 999
3 b. _________ + 30 = 333
4 a. _________ + 10 = 240
4 b. 102 + ______ = 162
5 a. _________ + 10 = 371
5 b. _________ + 40 = 540
6 a. 102 + ______ = 152
6 b. _________ + 30 = 666
7 a. ______ + 50 = 164
7 b. 348 + _________ = 398
8 a. 202 + _________ = 222
8 b. _________ + 30 = 652
9 a. 268 + _________ = 298
9 b. ______ + 40 = 190
10 a. _________ + 60 = 384
10 b. 346 + _________ = 396
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Answer Key

1 a. 20    
1 b. 10    
2 a. 60    
2 b. 356    
3 a. 969    
3 b. 303    
4 a. 230    
4 b. 60    
5 a. 361    
5 b. 500    
6 a. 50    
6 b. 636    
7 a. 114    
7 b. 50    
8 a. 20    
8 b. 622    
9 a. 30    
9 b. 150    
10 a. 324    
10 b. 50    

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