Addition Worksheet

Solve.

1 a. ______ + 6 + 5 + 40 = 71
1 b. 10 + 80 + 8 + ______ = 100
2 a. 10 + 5 + 4 + ______ = 109
2 b. 50 + 60 + ______ + 4 = 121
3 a. 5 + 90 + 2 + ______ = 147
3 b. 3 + 10 + ______ + 10 = 30
4 a. 5 + ______ + 70 + 40 = 122
4 b. 7 + 7 + 50 + ______ = 74
5 a. 8 + ______ + 30 + 20 = 64
5 b. ______ + 10 + 9 + 5 = 54
6 a. ______ + 8 + 2 + 80 = 110
6 b. 40 + 10 + ______ + 5 = 63
7 a. 6 + 80 + 7 + ______ = 133
7 b. 7 + 50 + 5 + ______ = 82
8 a. 8 + ______ + 4 + 50 = 72
8 b. 6 + 4 + ______ + 40 = 90
9 a. ______ + 4 + 10 + 40 = 57
9 b. ______ + 7 + 9 + 70 = 126
10 a. 80 + ______ + 3 + 5 = 138
10 b. 20 + ______ + 7 + 5 = 122
Page 2

Answer Key

1 a. 20    
1 b. 2    
2 a. 90    
2 b. 7    
3 a. 50    
3 b. 7    
4 a. 7    
4 b. 10    
5 a. 6    
5 b. 30    
6 a. 20    
6 b. 8    
7 a. 40    
7 b. 20    
8 a. 10    
8 b. 40    
9 a. 3    
9 b. 40    
10 a. 50    
10 b. 90    


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