Addition Worksheet

Solve.

1 a. 710 + _________ = 760
1 b. 910 + _________ = 980
2 a. 600 + _________ = 690
2 b. 500 + _________ = 570
3 a. _________ + 10 = 910
3 b. 120 + ______ = 180
4 a. 430 + _________ = 460
4 b. _________ + 20 = 730
5 a. 330 + _________ = 330
5 b. _________ + 50 = 650
6 a. _________ + 30 = 770
6 b. 150 + ______ = 180
7 a. _________ + 60 = 270
7 b. 620 + _________ = 660
8 a. _________ + 20 = 640
8 b. _________ + 20 = 390
9 a. 520 + _________ = 580
9 b. 500 + _________ = 540
10 a. _________ + 40 = 560
10 b. ______ + 50 = 150
Page 2

Answer Key

1 a. 50    
1 b. 70    
2 a. 90    
2 b. 70    
3 a. 900    
3 b. 60    
4 a. 30    
4 b. 710    
5 a. 0    
5 b. 600    
6 a. 740    
6 b. 30    
7 a. 210    
7 b. 40    
8 a. 620    
8 b. 370    
9 a. 60    
9 b. 40    
10 a. 520    
10 b. 100    


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