Addition Worksheet

Solve.

1 a. 530 + _________ = 570
1 b. ______ + 40 = 190
2 a. _________ + 30 = 480
2 b. 610 + _________ = 640
3 a. _________ + 50 = 890
3 b. _________ + 50 = 990
4 a. 620 + _________ = 680
4 b. _________ + 20 = 950
5 a. _________ + 10 = 230
5 b. _________ + 30 = 930
6 a. _________ + 50 = 480
6 b. _________ + 30 = 560
7 a. 650 + _________ = 690
7 b. 830 + _________ = 880
8 a. _________ + 40 = 780
8 b. 440 + _________ = 470
9 a. 220 + _________ = 280
9 b. 310 + _________ = 370
10 a. _________ + 80 = 390
10 b. 350 + _________ = 390
Page 2

Answer Key

1 a. 40    
1 b. 150    
2 a. 450    
2 b. 30    
3 a. 840    
3 b. 940    
4 a. 60    
4 b. 930    
5 a. 220    
5 b. 900    
6 a. 430    
6 b. 530    
7 a. 40    
7 b. 50    
8 a. 740    
8 b. 30    
9 a. 60    
9 b. 60    
10 a. 310    
10 b. 40    


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