Addition Worksheet 1

1 a.   

______ + 40 = 80

1 b.   

60 + ______ = 110

2 a.   

______ + 60 = 110

2 b.   

______ + 20 = 80

3 a.   

______ + 90 = 150

3 b.   

______ + 90 = 100

4 a.   

______ + 90 = 120

4 b.   

70 + ______ = 140

5 a.   

40 + ______ = 110

5 b.   

30 + ______ = 110

6 a.   

20 + ______ = 100

6 b.   

20 + ______ = 30

7 a.   

______ + 70 = 100

7 b.   

30 + ______ = 60

8 a.   

30 + ______ = 70

8 b.   

50 + ______ = 60

9 a.   

70 + ______ = 100

9 b.   

30 + ______ = 80

 

Answer Key

 

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