Addition Worksheet

Solve.

1 a. _________ + 30 = 680
1 b. 860 + _________ = 890
2 a. 530 + _________ = 560
2 b. 640 + _________ = 670
3 a. 130 + ______ = 150
3 b. _________ + 80 = 690
4 a. 220 + _________ = 250
4 b. _________ + 0 = 550
5 a. 140 + ______ = 190
5 b. 420 + _________ = 470
6 a. _________ + 20 = 470
6 b. ______ + 30 = 180
7 a. 320 + _________ = 330
7 b. 680 + _________ = 690
8 a. ______ + 20 = 180
8 b. _________ + 10 = 220
9 a. 110 + ______ = 150
9 b. 540 + _________ = 580
10 a. 300 + _________ = 360
10 b. 810 + _________ = 840
Page 2

Answer Key

1 a. 650    
1 b. 30    
2 a. 30    
2 b. 30    
3 a. 20    
3 b. 610    
4 a. 30    
4 b. 550    
5 a. 50    
5 b. 50    
6 a. 450    
6 b. 150    
7 a. 10    
7 b. 10    
8 a. 160    
8 b. 210    
9 a. 40    
9 b. 40    
10 a. 60    
10 b. 30    


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