Addition Worksheet 1

1 a.   

50 + ______ = 80

1 b.   

30 + ______ = 100

2 a.   

30 + ______ = 70

2 b.   

______ + 30 = 120

3 a.   

______ + 20 = 90

3 b.   

______ + 90 = 110

4 a.   

______ + 40 = 100

4 b.   

______ + 90 = 170

5 a.   

20 + ______ = 60

5 b.   

______ + 30 = 80

6 a.   

30 + ______ = 90

6 b.   

______ + 10 = 50

7 a.   

80 + ______ = 150

7 b.   

______ + 50 = 90

8 a.   

50 + ______ = 140

8 b.   

90 + ______ = 100

9 a.   

30 + ______ = 40

9 b.   

______ + 70 = 130

10 a.   

80 + ______ = 160

10 b.   

40 + ______ = 70

 

Answer Key

 

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