Addition Worksheet

Solve.

1 a. ______ + 60 = 180
1 b. 700 + _________ = 770
2 a. 220 + _________ = 260
2 b. 860 + _________ = 870
3 a. _________ + 10 = 850
3 b. 130 + ______ = 190
4 a. 510 + _________ = 590
4 b. _________ + 20 = 940
5 a. _________ + 20 = 540
5 b. 450 + _________ = 490
6 a. ______ + 60 = 170
6 b. ______ + 50 = 170
7 a. _________ + 30 = 740
7 b. _________ + 50 = 570
8 a. 110 + ______ = 120
8 b. _________ + 50 = 950
9 a. 150 + ______ = 190
9 b. 150 + ______ = 160
10 a. _________ + 30 = 470
10 b. 350 + _________ = 370
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Answer Key

1 a. 120    
1 b. 70    
2 a. 40    
2 b. 10    
3 a. 840    
3 b. 60    
4 a. 80    
4 b. 920    
5 a. 520    
5 b. 40    
6 a. 110    
6 b. 120    
7 a. 710    
7 b. 520    
8 a. 10    
8 b. 900    
9 a. 40    
9 b. 10    
10 a. 440    
10 b. 20    


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