Addition Worksheet

Solve.

1 a. ______ + 10 = 170
1 b. _________ + 30 = 930
2 a. ______ + 40 = 170
2 b. 630 + _________ = 640
3 a. 810 + _________ = 850
3 b. 330 + _________ = 380
4 a. 760 + _________ = 790
4 b. 310 + _________ = 330
5 a. _________ + 80 = 390
5 b. _________ + 50 = 260
6 a. 360 + _________ = 370
6 b. _________ + 40 = 850
7 a. 130 + ______ = 170
7 b. _________ + 20 = 340
8 a. _________ + 70 = 680
8 b. 430 + _________ = 490
9 a. 250 + _________ = 270
9 b. 910 + _________ = 980
10 a. _________ + 10 = 770
10 b. _________ + 20 = 690
Page 2

Answer Key

1 a. 160    
1 b. 900    
2 a. 130    
2 b. 10    
3 a. 40    
3 b. 50    
4 a. 30    
4 b. 20    
5 a. 310    
5 b. 210    
6 a. 10    
6 b. 810    
7 a. 40    
7 b. 320    
8 a. 610    
8 b. 60    
9 a. 20    
9 b. 70    
10 a. 760    
10 b. 670    


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