Addition Worksheet

Solve.

1 a. _________ + 20 = 477
1 b. 201 + _________ = 211
2 a. _________ + 50 = 396
2 b. ______ + 30 = 195
3 a. _________ + 70 = 499
3 b. 138 + ______ = 148
4 a. 359 + _________ = 369
4 b. 812 + _________ = 862
5 a. _________ + 20 = 458
5 b. _________ + 40 = 253
6 a. 514 + _________ = 544
6 b. _________ + 30 = 986
7 a. 169 + ______ = 179
7 b. 527 + _________ = 577
8 a. 129 + ______ = 169
8 b. 450 + _________ = 490
9 a. _________ + 50 = 654
9 b. ______ + 40 = 189
10 a. 189 + ______ = 199
10 b. _________ + 20 = 359
Page 2

Answer Key

1 a. 457    
1 b. 10    
2 a. 346    
2 b. 165    
3 a. 429    
3 b. 10    
4 a. 10    
4 b. 50    
5 a. 438    
5 b. 213    
6 a. 30    
6 b. 956    
7 a. 10    
7 b. 50    
8 a. 40    
8 b. 40    
9 a. 604    
9 b. 149    
10 a. 10    
10 b. 339    


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