Addition Worksheet

Solve.

1 a. 840 + 10 = ________
1 b. 160 + 10 = ________
2 a. 330 + 20 = ________
2 b. 360 + 30 = ________
3 a. 250 + 30 = ________
3 b. 780 + 10 = ________
4 a. 120 + 30 = ________
4 b. 400 + 60 = ________
5 a. 400 + 80 = ________
5 b. 470 + 20 = ________
6 a. 170 + 0 = ________
6 b. 930 + 60 = ________
7 a. 740 + 20 = ________
7 b. 210 + 70 = ________
8 a. 300 + 50 = ________
8 b. 950 + 30 = ________
9 a. 410 + 40 = ________
9 b. 430 + 30 = ________
10 a. 250 + 10 = ________
10 b. 530 + 40 = ________
Page 2

Answer Key

1 a. 850    
1 b. 170    
2 a. 350    
2 b. 390    
3 a. 280    
3 b. 790    
4 a. 150    
4 b. 460    
5 a. 480    
5 b. 490    
6 a. 170    
6 b. 990    
7 a. 760    
7 b. 280    
8 a. 350    
8 b. 980    
9 a. 450    
9 b. 460    
10 a. 260    
10 b. 570    


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