Addition Worksheet

Solve.

1 a. 9 + _________ + 700 = 789
1 b. 8 + _________ + 200 = 208
2 a. 70 + _________ + 800 = 874
2 b. 700 + 10 + _________ = 711
3 a. 2 + _________ + 80 = 182
3 b. _________ + 1 + 800 = 831
4 a. 1 + _________ + 600 = 691
4 b. 2 + 500 + _________ = 582
5 a. _________ + 40 + 600 = 649
5 b. 70 + 5 + _________ = 575
6 a. 8 + 90 + _________ = 298
6 b. 4 + 20 + _________ = 524
7 a. 8 + 30 + _________ = 238
7 b. 8 + 90 + _________ = 598
8 a. 5 + _________ + 100 = 105
8 b. 30 + 4 + _________ = 434
9 a. 3 + 90 + _________ = 893
9 b. _________ + 70 + 1 = 971
10 a. 5 + 0 + _________ = 805
10 b. 2 + _________ + 300 = 302
Page 2

Answer Key

1 a. 80    
1 b. 0    
2 a. 4    
2 b. 1    
3 a. 100    
3 b. 30    
4 a. 90    
4 b. 80    
5 a. 9    
5 b. 500    
6 a. 200    
6 b. 500    
7 a. 200    
7 b. 500    
8 a. 0    
8 b. 400    
9 a. 800    
9 b. 900    
10 a. 800    
10 b. 0    


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