Addition Worksheet

Solve.

1 a. ______ + 30 = 180
1 b. 760 + _________ = 770
2 a. 710 + _________ = 790
2 b. 830 + _________ = 880
3 a. 800 + _________ = 840
3 b. ______ + 20 = 150
4 a. _________ + 70 = 590
4 b. 900 + _________ = 930
5 a. _________ + 10 = 610
5 b. _________ + 70 = 290
6 a. 300 + _________ = 360
6 b. 540 + _________ = 550
7 a. _________ + 20 = 850
7 b. 400 + _________ = 430
8 a. _________ + 50 = 950
8 b. 440 + _________ = 450
9 a. _________ + 10 = 370
9 b. 540 + _________ = 570
10 a. _________ + 30 = 380
10 b. 120 + ______ = 160
Page 2

Answer Key

1 a. 150    
1 b. 10    
2 a. 80    
2 b. 50    
3 a. 40    
3 b. 130    
4 a. 520    
4 b. 30    
5 a. 600    
5 b. 220    
6 a. 60    
6 b. 10    
7 a. 830    
7 b. 30    
8 a. 900    
8 b. 10    
9 a. 360    
9 b. 30    
10 a. 350    
10 b. 40    


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