Addition Worksheet

Solve.

1 a. _________ + 20 = 450
1 b. 150 + ______ = 190
2 a. _________ + 70 = 690
2 b. _________ + 40 = 670
3 a. _________ + 40 = 840
3 b. _________ + 50 = 570
4 a. 340 + _________ = 370
4 b. 450 + _________ = 460
5 a. _________ + 60 = 690
5 b. _________ + 10 = 230
6 a. ______ + 10 = 170
6 b. 710 + _________ = 770
7 a. _________ + 50 = 770
7 b. 250 + _________ = 280
8 a. ______ + 60 = 170
8 b. _________ + 20 = 880
9 a. 620 + _________ = 660
9 b. 810 + _________ = 870
10 a. 540 + _________ = 590
10 b. _________ + 20 = 670
Page 2

Answer Key

1 a. 430    
1 b. 40    
2 a. 620    
2 b. 630    
3 a. 800    
3 b. 520    
4 a. 30    
4 b. 10    
5 a. 630    
5 b. 220    
6 a. 160    
6 b. 60    
7 a. 720    
7 b. 30    
8 a. 110    
8 b. 860    
9 a. 40    
9 b. 60    
10 a. 50    
10 b. 650    


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