Addition Worksheet

Solve.

1 a. 420 + 20 = ________
1 b. 920 + 60 = ________
2 a. 410 + 70 = ________
2 b. 780 + 10 = ________
3 a. 620 + 50 = ________
3 b. 440 + 40 = ________
4 a. 320 + 30 = ________
4 b. 600 + 40 = ________
5 a. 810 + 30 = ________
5 b. 750 + 30 = ________
6 a. 770 + 10 = ________
6 b. 630 + 50 = ________
7 a. 110 + 50 = ________
7 b. 800 + 40 = ________
8 a. 760 + 20 = ________
8 b. 640 + 0 = ________
9 a. 240 + 10 = ________
9 b. 120 + 40 = ________
10 a. 140 + 10 = ________
10 b. 710 + 70 = ________
Page 2

Answer Key

1 a. 440    
1 b. 980    
2 a. 480    
2 b. 790    
3 a. 670    
3 b. 480    
4 a. 350    
4 b. 640    
5 a. 840    
5 b. 780    
6 a. 780    
6 b. 680    
7 a. 160    
7 b. 840    
8 a. 780    
8 b. 640    
9 a. 250    
9 b. 160    
10 a. 150    
10 b. 780    


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