Addition Worksheet

Solve.

1 a. 5 + _________ + 200 = 225
1 b. _________ + 60 + 100 = 169
2 a. 2 + _________ + 800 = 832
2 b. 5 + _________ + 900 = 955
3 a. 0 + _________ + 10 = 610
3 b. 0 + _________ + 300 = 370
4 a. 4 + 60 + _________ = 764
4 b. 5 + _________ + 900 = 965
5 a. 8 + 80 + _________ = 388
5 b. 7 + 70 + _________ = 877
6 a. 4 + _________ + 90 = 894
6 b. _________ + 700 + 0 = 707
7 a. 300 + _________ + 2 = 372
7 b. 400 + 10 + _________ = 413
8 a. 0 + 600 + _________ = 690
8 b. 1 + _________ + 200 = 221
9 a. 100 + ______ + 9 = 169
9 b. _________ + 80 + 500 = 580
10 a. _________ + 90 + 400 = 496
10 b. 600 + 10 + _________ = 613
Page 2

Answer Key

1 a. 20    
1 b. 9    
2 a. 30    
2 b. 50    
3 a. 600    
3 b. 70    
4 a. 700    
4 b. 60    
5 a. 300    
5 b. 800    
6 a. 800    
6 b. 7    
7 a. 70    
7 b. 3    
8 a. 90    
8 b. 20    
9 a. 60    
9 b. 0    
10 a. 6    
10 b. 3    


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