Addition Worksheet 1

1 a.   

 10 + ______ = 60

1 b.   

 ______ + 60 = 120

2 a.   

 ______ + 10 = 30

2 b.   

 90 + ______ = 100

3 a.   

 80 + ______ = 150

3 b.   

 80 + ______ = 90

4 a.   

 30 + ______ = 70

4 b.   

 ______ + 90 = 170

5 a.   

 ______ + 10 = 90

5 b.   

 40 + ______ = 60

6 a.   

 ______ + 40 = 50

6 b.   

 ______ + 30 = 40

7 a.   

 ______ + 60 = 100

7 b.   

 70 + ______ = 80

8 a.   

 ______ + 60 = 130

8 b.   

 ______ + 40 = 60

9 a.   

 50 + ______ = 120

9 b.   

 50 + ______ = 80

 

Answer Key

 

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