Addition Worksheet

Solve.

1 a. 430 + _________ = 430
1 b. _________ + 30 = 280
2 a. 160 + ______ = 190
2 b. 800 + _________ = 850
3 a. _________ + 80 = 580
3 b. _________ + 40 = 880
4 a. 820 + _________ = 870
4 b. 710 + _________ = 740
5 a. ______ + 20 = 170
5 b. _________ + 10 = 760
6 a. 750 + _________ = 790
6 b. 700 + _________ = 740
7 a. _________ + 10 = 450
7 b. _________ + 30 = 480
8 a. _________ + 50 = 790
8 b. 250 + _________ = 270
9 a. 800 + _________ = 810
9 b. _________ + 30 = 580
10 a. _________ + 50 = 560
10 b. _________ + 20 = 450
Page 2

Answer Key

1 a. 0    
1 b. 250    
2 a. 30    
2 b. 50    
3 a. 500    
3 b. 840    
4 a. 50    
4 b. 30    
5 a. 150    
5 b. 750    
6 a. 40    
6 b. 40    
7 a. 440    
7 b. 450    
8 a. 740    
8 b. 20    
9 a. 10    
9 b. 550    
10 a. 510    
10 b. 430    


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