Addition Worksheet

Solve.

1 a. _________ + 9 + 300 = 389
1 b. _________ + 30 + 600 = 637
2 a. 4 + 0 + _________ = 704
2 b. 1 + _________ + 200 = 291
3 a. 40 + 3 + _________ = 543
3 b. _________ + 90 + 700 = 798
4 a. 3 + 400 + _________ = 433
4 b. 1 + _________ + 100 = 161
5 a. _________ + 10 + 200 = 219
5 b. 600 + _________ + 7 = 637
6 a. 2 + _________ + 90 = 592
6 b. 4 + _________ + 500 = 574
7 a. 90 + 0 + _________ = 790
7 b. 800 + 70 + _________ = 871
8 a. _________ + 1 + 800 = 881
8 b. _________ + 70 + 300 = 371
9 a. 3 + ______ + 100 = 143
9 b. 90 + _________ + 400 = 492
10 a. 50 + 9 + _________ = 259
10 b. _________ + 400 + 60 = 469
Page 2

Answer Key

1 a. 80    
1 b. 7    
2 a. 700    
2 b. 90    
3 a. 500    
3 b. 8    
4 a. 30    
4 b. 60    
5 a. 9    
5 b. 30    
6 a. 500    
6 b. 70    
7 a. 700    
7 b. 1    
8 a. 80    
8 b. 1    
9 a. 40    
9 b. 2    
10 a. 200    
10 b. 9    


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