Addition Worksheet 1

1 a.   

90 + ______ = 160

1 b.   

30 + ______ = 120

2 a.   

______ + 80 = 130

2 b.   

20 + ______ = 60

3 a.   

______ + 10 = 100

3 b.   

______ + 50 = 120

4 a.   

______ + 60 = 150

4 b.   

______ + 40 = 130

5 a.   

______ + 30 = 70

5 b.   

30 + ______ = 80

6 a.   

40 + ______ = 80

6 b.   

70 + ______ = 160

7 a.   

80 + ______ = 110

7 b.   

______ + 30 = 120

8 a.   

______ + 90 = 120

8 b.   

______ + 40 = 70

9 a.   

70 + ______ = 80

9 b.   

______ + 50 = 90

10 a.   

______ + 40 = 110

10 b.   

______ + 20 = 90

 

Answer Key

 

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