Addition Worksheet

Solve.

1 a. 80 + 6 + 300 = ________
1 b. 9 + 90 + 400 = ________
2 a. 80 + 5 + 100 = ________
2 b. 8 + 80 + 400 = ________
3 a. 70 + 5 + 700 = ________
3 b. 30 + 6 + 300 = ________
4 a. 5 + 40 + 600 = ________
4 b. 8 + 20 + 500 = ________
5 a. 6 + 100 + 10 = ________
5 b. 1 + 40 + 700 = ________
6 a. 2 + 50 + 600 = ________
6 b. 300 + 40 + 5 = ________
7 a. 3 + 70 + 700 = ________
7 b. 2 + 10 + 300 = ________
8 a. 60 + 8 + 400 = ________
8 b. 100 + 30 + 0 = ________
9 a. 9 + 60 + 800 = ________
9 b. 10 + 1 + 700 = ________
10 a. 2 + 300 + 10 = ________
10 b. 0 + 50 + 500 = ________
Page 2

Answer Key

1 a. 386    
1 b. 499    
2 a. 185    
2 b. 488    
3 a. 775    
3 b. 336    
4 a. 645    
4 b. 528    
5 a. 116    
5 b. 741    
6 a. 652    
6 b. 345    
7 a. 773    
7 b. 312    
8 a. 468    
8 b. 130    
9 a. 869    
9 b. 711    
10 a. 312    
10 b. 550    


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