Addition Worksheet

Solve.

1 a. 540 + _________ = 570
1 b. 650 + _________ = 680
2 a. 230 + _________ = 260
2 b. 920 + _________ = 960
3 a. 220 + _________ = 260
3 b. _________ + 60 = 580
4 a. 720 + _________ = 790
4 b. _________ + 10 = 490
5 a. 630 + _________ = 660
5 b. _________ + 30 = 690
6 a. 630 + _________ = 650
6 b. 570 + _________ = 580
7 a. 670 + _________ = 670
7 b. 140 + ______ = 150
8 a. 440 + _________ = 460
8 b. 680 + _________ = 680
9 a. 730 + _________ = 780
9 b. 750 + _________ = 750
10 a. 410 + _________ = 470
10 b. 510 + _________ = 590
Page 2

Answer Key

1 a. 30    
1 b. 30    
2 a. 30    
2 b. 40    
3 a. 40    
3 b. 520    
4 a. 70    
4 b. 480    
5 a. 30    
5 b. 660    
6 a. 20    
6 b. 10    
7 a. 0    
7 b. 10    
8 a. 20    
8 b. 0    
9 a. 50    
9 b. 0    
10 a. 60    
10 b. 80    


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