Addition Worksheet

Solve.

1 a. 710 + _________ = 740
1 b. 930 + _________ = 970
2 a. 350 + _________ = 360
2 b. 650 + _________ = 670
3 a. _________ + 60 = 480
3 b. 450 + _________ = 490
4 a. 220 + _________ = 270
4 b. _________ + 40 = 740
5 a. _________ + 0 = 660
5 b. _________ + 50 = 460
6 a. 200 + _________ = 280
6 b. _________ + 20 = 280
7 a. _________ + 40 = 290
7 b. 220 + _________ = 250
8 a. 470 + _________ = 480
8 b. 630 + _________ = 690
9 a. 900 + _________ = 940
9 b. 740 + _________ = 780
10 a. 130 + ______ = 150
10 b. 180 + ______ = 180
Page 2

Answer Key

1 a. 30    
1 b. 40    
2 a. 10    
2 b. 20    
3 a. 420    
3 b. 40    
4 a. 50    
4 b. 700    
5 a. 660    
5 b. 410    
6 a. 80    
6 b. 260    
7 a. 250    
7 b. 30    
8 a. 10    
8 b. 60    
9 a. 40    
9 b. 40    
10 a. 20    
10 b. 0    


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