Addition Worksheet

Solve.

1 a. 800 + _________ = 850
1 b. 300 + _________ = 330
2 a. _________ + 20 = 730
2 b. _________ + 70 = 580
3 a. _________ + 30 = 250
3 b. _________ + 50 = 460
4 a. 210 + _________ = 230
4 b. _________ + 50 = 680
5 a. _________ + 0 = 750
5 b. _________ + 50 = 790
6 a. _________ + 40 = 880
6 b. 700 + _________ = 740
7 a. _________ + 50 = 360
7 b. ______ + 10 = 140
8 a. 760 + _________ = 780
8 b. _________ + 60 = 880
9 a. 400 + _________ = 410
9 b. 400 + _________ = 440
10 a. 520 + _________ = 560
10 b. _________ + 60 = 870
Page 2

Answer Key

1 a. 50    
1 b. 30    
2 a. 710    
2 b. 510    
3 a. 220    
3 b. 410    
4 a. 20    
4 b. 630    
5 a. 750    
5 b. 740    
6 a. 840    
6 b. 40    
7 a. 310    
7 b. 130    
8 a. 20    
8 b. 820    
9 a. 10    
9 b. 40    
10 a. 40    
10 b. 810    


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