Addition Worksheet

Solve.

1 a. 9 + 80 + _________ = 289
1 b. 4 + _________ + 800 = 894
2 a. 30 + 4 + _________ = 434
2 b. 7 + 20 + _________ = 727
3 a. 2 + 10 + _________ = 212
3 b. 2 + ______ + 10 = 112
4 a. _________ + 80 + 600 = 688
4 b. 60 + _________ + 900 = 962
5 a. 0 + _________ + 300 = 300
5 b. 4 + _________ + 800 = 804
6 a. 6 + 200 + _________ = 276
6 b. 8 + _________ + 70 = 978
7 a. 80 + _________ + 100 = 189
7 b. 500 + _________ + 2 = 572
8 a. 4 + _________ + 0 = 904
8 b. 100 + 90 + ______ = 192
9 a. _________ + 0 + 8 = 208
9 b. _________ + 80 + 600 = 685
10 a. _________ + 90 + 100 = 199
10 b. 9 + _________ + 900 = 939
Page 2

Answer Key

1 a. 200    
1 b. 90    
2 a. 400    
2 b. 700    
3 a. 200    
3 b. 100    
4 a. 8    
4 b. 2    
5 a. 0    
5 b. 0    
6 a. 70    
6 b. 900    
7 a. 9    
7 b. 70    
8 a. 900    
8 b. 2    
9 a. 200    
9 b. 5    
10 a. 9    
10 b. 30    


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