Addition Worksheet

Solve.

1 a. _________ + 10 = 770
1 b. 250 + _________ = 250
2 a. 570 + _________ = 580
2 b. _________ + 20 = 950
3 a. _________ + 40 = 670
3 b. 550 + _________ = 560
4 a. 430 + _________ = 490
4 b. _________ + 30 = 530
5 a. 120 + ______ = 150
5 b. 400 + _________ = 440
6 a. _________ + 30 = 470
6 b. 630 + _________ = 670
7 a. 240 + _________ = 290
7 b. _________ + 40 = 550
8 a. _________ + 20 = 490
8 b. ______ + 10 = 140
9 a. 610 + _________ = 660
9 b. ______ + 50 = 180
10 a. _________ + 10 = 780
10 b. 750 + _________ = 790
Page 2

Answer Key

1 a. 760    
1 b. 0    
2 a. 10    
2 b. 930    
3 a. 630    
3 b. 10    
4 a. 60    
4 b. 500    
5 a. 30    
5 b. 40    
6 a. 440    
6 b. 40    
7 a. 50    
7 b. 510    
8 a. 470    
8 b. 130    
9 a. 50    
9 b. 130    
10 a. 770    
10 b. 40    


Copying permission: You are free to copy this worksheet to any number of students for their mathematics work. Do not distribute on websites, books, or any such material without permission. Copyright www.HomeschoolMath.net