Addition Worksheet

Solve.

1 a. _________ + 0 = 850
1 b. _________ + 30 = 960
2 a. 420 + _________ = 470
2 b. _________ + 30 = 280
3 a. 240 + _________ = 290
3 b. 800 + _________ = 890
4 a. 500 + _________ = 570
4 b. _________ + 20 = 560
5 a. 570 + _________ = 580
5 b. 870 + _________ = 890
6 a. _________ + 50 = 390
6 b. 670 + _________ = 680
7 a. _________ + 20 = 240
7 b. 220 + _________ = 240
8 a. _________ + 40 = 480
8 b. _________ + 20 = 880
9 a. 950 + _________ = 990
9 b. ______ + 50 = 170
10 a. 240 + _________ = 280
10 b. 810 + _________ = 820
Page 2

Answer Key

1 a. 850    
1 b. 930    
2 a. 50    
2 b. 250    
3 a. 50    
3 b. 90    
4 a. 70    
4 b. 540    
5 a. 10    
5 b. 20    
6 a. 340    
6 b. 10    
7 a. 220    
7 b. 20    
8 a. 440    
8 b. 860    
9 a. 40    
9 b. 120    
10 a. 40    
10 b. 10    


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