Addition Worksheet

Solve.

1 a. _________ + 100 + 70 = 175
1 b. _________ + 300 + 0 = 304
2 a. _________ + 80 + 900 = 981
2 b. _________ + 40 + 800 = 843
3 a. 100 + ______ + 2 = 152
3 b. _________ + 30 + 400 = 432
4 a. 3 + _________ + 900 = 953
4 b. 50 + 5 + _________ = 355
5 a. 7 + 80 + _________ = 487
5 b. 7 + 40 + _________ = 447
6 a. 200 + 20 + _________ = 222
6 b. _________ + 800 + 60 = 869
7 a. 0 + _________ + 900 = 970
7 b. 3 + 900 + _________ = 913
Page 2

Answer Key

1 a. 5    
1 b. 4    
2 a. 1    
2 b. 3    
3 a. 50    
3 b. 2    
4 a. 50    
4 b. 300    
5 a. 400    
5 b. 400    
6 a. 2    
6 b. 9    
7 a. 70    
7 b. 10    


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