Addition Worksheet

Solve.

1 a. 540 + _________ = 550
1 b. _________ + 10 = 870
2 a. ______ + 30 = 180
2 b. _________ + 60 = 490
3 a. 560 + _________ = 560
3 b. _________ + 40 = 480
4 a. _________ + 50 = 390
4 b. _________ + 20 = 850
5 a. 750 + _________ = 780
5 b. _________ + 20 = 260
6 a. 420 + _________ = 450
6 b. 860 + _________ = 870
7 a. _________ + 0 = 760
7 b. _________ + 90 = 790
8 a. _________ + 30 = 580
8 b. _________ + 30 = 340
9 a. 220 + _________ = 230
9 b. _________ + 20 = 780
10 a. 660 + _________ = 690
10 b. _________ + 20 = 370
Page 2

Answer Key

1 a. 10    
1 b. 860    
2 a. 150    
2 b. 430    
3 a. 0    
3 b. 440    
4 a. 340    
4 b. 830    
5 a. 30    
5 b. 240    
6 a. 30    
6 b. 10    
7 a. 760    
7 b. 700    
8 a. 550    
8 b. 310    
9 a. 10    
9 b. 760    
10 a. 30    
10 b. 350    


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