Addition Worksheet

Solve.

1 a. _________ + 50 = 760
1 b. 420 + _________ = 490
2 a. 740 + _________ = 770
2 b. 500 + _________ = 520
3 a. 410 + _________ = 460
3 b. _________ + 50 = 450
4 a. _________ + 40 = 790
4 b. 430 + _________ = 460
5 a. ______ + 70 = 190
5 b. 540 + _________ = 590
6 a. _________ + 70 = 790
6 b. _________ + 20 = 560
7 a. 150 + ______ = 160
7 b. _________ + 60 = 570
8 a. _________ + 30 = 690
8 b. _________ + 40 = 440
9 a. _________ + 40 = 990
9 b. _________ + 40 = 870
10 a. 550 + _________ = 570
10 b. 240 + _________ = 290
Page 2

Answer Key

1 a. 710    
1 b. 70    
2 a. 30    
2 b. 20    
3 a. 50    
3 b. 400    
4 a. 750    
4 b. 30    
5 a. 120    
5 b. 50    
6 a. 720    
6 b. 540    
7 a. 10    
7 b. 510    
8 a. 660    
8 b. 400    
9 a. 950    
9 b. 830    
10 a. 20    
10 b. 50    


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