Addition Worksheet

Solve.

1 a. 820 + 50 = ________
1 b. 350 + 40 = ________
2 a. 420 + 50 = ________
2 b. 300 + 70 = ________
3 a. 900 + 90 = ________
3 b. 900 + 50 = ________
4 a. 490 + 0 = ________
4 b. 900 + 10 = ________
5 a. 520 + 50 = ________
5 b. 760 + 20 = ________
6 a. 850 + 10 = ________
6 b. 770 + 20 = ________
7 a. 140 + 40 = ________
7 b. 160 + 20 = ________
8 a. 720 + 20 = ________
8 b. 840 + 10 = ________
9 a. 210 + 30 = ________
9 b. 240 + 40 = ________
10 a. 110 + 20 = ________
10 b. 120 + 10 = ________
Page 2

Answer Key

1 a. 870    
1 b. 390    
2 a. 470    
2 b. 370    
3 a. 990    
3 b. 950    
4 a. 490    
4 b. 910    
5 a. 570    
5 b. 780    
6 a. 860    
6 b. 790    
7 a. 180    
7 b. 180    
8 a. 740    
8 b. 850    
9 a. 240    
9 b. 280    
10 a. 130    
10 b. 130    


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