Addition Worksheet

Solve.

1 a. 3 + 100 + ______ = 183
1 b. _________ + 30 + 200 = 231
2 a. 80 + 1 + ______ = 181
2 b. 7 + _________ + 900 = 947
3 a. 10 + 7 + _________ = 217
3 b. 60 + _________ + 800 = 864
4 a. _________ + 20 + 700 = 721
4 b. _________ + 70 + 900 = 977
5 a. 6 + _________ + 100 = 136
5 b. _________ + 3 + 800 = 893
6 a. _________ + 0 + 400 = 408
6 b. 700 + 60 + _________ = 768
7 a. _________ + 0 + 800 = 809
7 b. 80 + 4 + _________ = 784
Page 2

Answer Key

1 a. 80    
1 b. 1    
2 a. 100    
2 b. 40    
3 a. 200    
3 b. 4    
4 a. 1    
4 b. 7    
5 a. 30    
5 b. 90    
6 a. 8    
6 b. 8    
7 a. 9    
7 b. 700    


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