Addition Worksheet

Solve.

1 a. 510 + 70 = ________
1 b. 700 + 70 = ________
2 a. 650 + 40 = ________
2 b. 330 + 40 = ________
3 a. 340 + 40 = ________
3 b. 870 + 20 = ________
4 a. 630 + 40 = ________
4 b. 830 + 50 = ________
5 a. 320 + 20 = ________
5 b. 740 + 20 = ________
6 a. 630 + 0 = ________
6 b. 360 + 30 = ________
7 a. 750 + 30 = ________
7 b. 520 + 60 = ________
8 a. 530 + 20 = ________
8 b. 150 + 0 = ________
9 a. 210 + 50 = ________
9 b. 820 + 60 = ________
10 a. 360 + 20 = ________
10 b. 220 + 60 = ________
Page 2

Answer Key

1 a. 580    
1 b. 770    
2 a. 690    
2 b. 370    
3 a. 380    
3 b. 890    
4 a. 670    
4 b. 880    
5 a. 340    
5 b. 760    
6 a. 630    
6 b. 390    
7 a. 780    
7 b. 580    
8 a. 550    
8 b. 150    
9 a. 260    
9 b. 880    
10 a. 380    
10 b. 280    


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