Addition Worksheet

Solve.

1 a. _________ + 90 = 890
1 b. 110 + ______ = 130
2 a. 730 + _________ = 760
2 b. 150 + ______ = 180
3 a. 730 + _________ = 790
3 b. _________ + 80 = 290
4 a. 230 + _________ = 270
4 b. _________ + 60 = 270
5 a. 230 + _________ = 280
5 b. 370 + _________ = 380
6 a. _________ + 20 = 940
6 b. ______ + 20 = 180
7 a. _________ + 20 = 470
7 b. 510 + _________ = 520
8 a. _________ + 60 = 580
8 b. _________ + 40 = 370
9 a. 550 + _________ = 590
9 b. _________ + 0 = 660
10 a. 500 + _________ = 540
10 b. 450 + _________ = 480
Page 2

Answer Key

1 a. 800    
1 b. 20    
2 a. 30    
2 b. 30    
3 a. 60    
3 b. 210    
4 a. 40    
4 b. 210    
5 a. 50    
5 b. 10    
6 a. 920    
6 b. 160    
7 a. 450    
7 b. 10    
8 a. 520    
8 b. 330    
9 a. 40    
9 b. 660    
10 a. 40    
10 b. 30    


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