Addition Worksheet

Solve.

1 a. 430 + _________ = 480
1 b. 540 + _________ = 540
2 a. _________ + 40 = 390
2 b. _________ + 10 = 710
3 a. ______ + 10 = 170
3 b. 710 + _________ = 750
4 a. 220 + _________ = 240
4 b. 240 + _________ = 290
5 a. _________ + 10 = 220
5 b. 310 + _________ = 370
6 a. _________ + 60 = 690
6 b. _________ + 0 = 340
7 a. 940 + _________ = 950
7 b. ______ + 30 = 150
8 a. _________ + 30 = 340
8 b. _________ + 30 = 880
9 a. _________ + 50 = 470
9 b. 150 + ______ = 170
10 a. ______ + 60 = 190
10 b. _________ + 30 = 780
Page 2

Answer Key

1 a. 50    
1 b. 0    
2 a. 350    
2 b. 700    
3 a. 160    
3 b. 40    
4 a. 20    
4 b. 50    
5 a. 210    
5 b. 60    
6 a. 630    
6 b. 340    
7 a. 10    
7 b. 120    
8 a. 310    
8 b. 850    
9 a. 420    
9 b. 20    
10 a. 130    
10 b. 750    


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