Addition Worksheet

Solve.

1 a. 370 + 20 = ________
1 b. 830 + 20 = ________
2 a. 450 + 10 = ________
2 b. 650 + 10 = ________
3 a. 450 + 0 = ________
3 b. 350 + 20 = ________
4 a. 320 + 50 = ________
4 b. 140 + 20 = ________
5 a. 720 + 40 = ________
5 b. 380 + 10 = ________
6 a. 420 + 20 = ________
6 b. 430 + 0 = ________
7 a. 300 + 50 = ________
7 b. 920 + 70 = ________
8 a. 310 + 80 = ________
8 b. 730 + 40 = ________
9 a. 460 + 20 = ________
9 b. 280 + 10 = ________
10 a. 850 + 20 = ________
10 b. 540 + 30 = ________
Page 2

Answer Key

1 a. 390    
1 b. 850    
2 a. 460    
2 b. 660    
3 a. 450    
3 b. 370    
4 a. 370    
4 b. 160    
5 a. 760    
5 b. 390    
6 a. 440    
6 b. 430    
7 a. 350    
7 b. 990    
8 a. 390    
8 b. 770    
9 a. 480    
9 b. 290    
10 a. 870    
10 b. 570    


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