Addition Worksheet

Solve.

1 a. 660 + 3 = ________
1 b. 660 + 8 = ________
2 a. 320 + 1 = ________
2 b. 690 + 9 = ________
3 a. 633 + 6 = ________
3 b. 781 + 8 = ________
4 a. 503 + 1 = ________
4 b. 359 + 2 = ________
5 a. 507 + 9 = ________
5 b. 417 + 4 = ________
6 a. 431 + 9 = ________
6 b. 987 + 1 = ________
7 a. 344 + 4 = ________
7 b. 679 + 5 = ________
8 a. 595 + 2 = ________
8 b. 676 + 2 = ________
9 a. 887 + 1 = ________
9 b. 617 + 8 = ________
10 a. 441 + 9 = ________
10 b. 161 + 5 = ________
Page 2

Answer Key

1 a. 663    
1 b. 668    
2 a. 321    
2 b. 699    
3 a. 639    
3 b. 789    
4 a. 504    
4 b. 361    
5 a. 516    
5 b. 421    
6 a. 440    
6 b. 988    
7 a. 348    
7 b. 684    
8 a. 597    
8 b. 678    
9 a. 888    
9 b. 625    
10 a. 450    
10 b. 166    


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