Addition Worksheet

Solve.

1 a. 917 + _________ = 947
1 b. ______ + 40 = 147
2 a. _________ + 10 = 213
2 b. 330 + _________ = 330
3 a. ______ + 20 = 157
3 b. _________ + 10 = 614
4 a. 321 + _________ = 391
4 b. 302 + _________ = 372
5 a. _________ + 60 = 385
5 b. _________ + 30 = 237
6 a. _________ + 50 = 656
6 b. _________ + 30 = 299
7 a. 145 + ______ = 185
7 b. _________ + 10 = 244
8 a. 162 + ______ = 182
8 b. ______ + 40 = 142
9 a. _________ + 50 = 591
9 b. 916 + _________ = 946
10 a. _________ + 40 = 251
10 b. 640 + _________ = 650
Page 2

Answer Key

1 a. 30    
1 b. 107    
2 a. 203    
2 b. 0    
3 a. 137    
3 b. 604    
4 a. 70    
4 b. 70    
5 a. 325    
5 b. 207    
6 a. 606    
6 b. 269    
7 a. 40    
7 b. 234    
8 a. 20    
8 b. 102    
9 a. 541    
9 b. 30    
10 a. 211    
10 b. 10    

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