Addition Worksheet

Solve.

1 a. 300 + 60 = ________
1 b. 550 + 20 = ________
2 a. 630 + 40 = ________
2 b. 540 + 10 = ________
3 a. 100 + 40 = ________
3 b. 520 + 70 = ________
4 a. 670 + 10 = ________
4 b. 160 + 10 = ________
5 a. 740 + 40 = ________
5 b. 270 + 20 = ________
6 a. 460 + 30 = ________
6 b. 800 + 50 = ________
7 a. 820 + 20 = ________
7 b. 300 + 20 = ________
8 a. 210 + 20 = ________
8 b. 130 + 50 = ________
9 a. 510 + 30 = ________
9 b. 320 + 70 = ________
10 a. 570 + 10 = ________
10 b. 220 + 50 = ________
Page 2

Answer Key

1 a. 360    
1 b. 570    
2 a. 670    
2 b. 550    
3 a. 140    
3 b. 590    
4 a. 680    
4 b. 170    
5 a. 780    
5 b. 290    
6 a. 490    
6 b. 850    
7 a. 840    
7 b. 320    
8 a. 230    
8 b. 180    
9 a. 540    
9 b. 390    
10 a. 580    
10 b. 270    


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