Addition Worksheet

Solve.

1 a. 930 + _________ = 940
1 b. _________ + 60 = 970
2 a. _________ + 80 = 490
2 b. 420 + _________ = 450
3 a. 620 + _________ = 670
3 b. 710 + _________ = 730
4 a. ______ + 40 = 170
4 b. 740 + _________ = 780
5 a. 750 + _________ = 790
5 b. 110 + ______ = 140
6 a. _________ + 10 = 960
6 b. 440 + _________ = 490
7 a. 550 + _________ = 590
7 b. 830 + _________ = 840
8 a. 870 + _________ = 880
8 b. 900 + _________ = 910
9 a. 240 + _________ = 260
9 b. _________ + 20 = 770
10 a. _________ + 50 = 660
10 b. _________ + 50 = 960
Page 2

Answer Key

1 a. 10    
1 b. 910    
2 a. 410    
2 b. 30    
3 a. 50    
3 b. 20    
4 a. 130    
4 b. 40    
5 a. 40    
5 b. 30    
6 a. 950    
6 b. 50    
7 a. 40    
7 b. 10    
8 a. 10    
8 b. 10    
9 a. 20    
9 b. 750    
10 a. 610    
10 b. 910    


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