Addition Worksheet

Solve.

1 a. 640 + 0 = ________
1 b. 650 + 10 = ________
2 a. 810 + 40 = ________
2 b. 750 + 10 = ________
3 a. 400 + 40 = ________
3 b. 300 + 50 = ________
4 a. 800 + 50 = ________
4 b. 920 + 20 = ________
5 a. 210 + 60 = ________
5 b. 920 + 70 = ________
6 a. 240 + 40 = ________
6 b. 650 + 40 = ________
7 a. 320 + 30 = ________
7 b. 820 + 40 = ________
8 a. 150 + 20 = ________
8 b. 470 + 0 = ________
9 a. 220 + 40 = ________
9 b. 430 + 50 = ________
10 a. 640 + 50 = ________
10 b. 750 + 40 = ________
Page 2

Answer Key

1 a. 640    
1 b. 660    
2 a. 850    
2 b. 760    
3 a. 440    
3 b. 350    
4 a. 850    
4 b. 940    
5 a. 270    
5 b. 990    
6 a. 280    
6 b. 690    
7 a. 350    
7 b. 860    
8 a. 170    
8 b. 470    
9 a. 260    
9 b. 480    
10 a. 690    
10 b. 790    


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