Addition Worksheet

Solve.

1 a. 10 + ______ + 10 + 40 = 140
2 a. 90 + ______ + 20 + 90 = 260
3 a. 70 + 70 + ______ + 40 = 260
4 a. _________ + 40 + 80 + 60 = 250
5 a. ______ + 20 + 70 + 50 = 150
6 a. ______ + 60 + 10 + 10 = 100
7 a. 40 + 10 + 50 + ______ = 120
8 a. 30 + 50 + ______ + 50 = 210
9 a. ______ + 10 + 80 + 80 = 240
10 a. ______ + 10 + 10 + 20 = 80
Page 2

Answer Key

1 a. 80    
2 a. 60    
3 a. 80    
4 a. 70    
5 a. 10    
6 a. 20    
7 a. 20    
8 a. 80    
9 a. 70    
10 a. 40    


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