Addition Worksheet 1

1 a.   

60 + ______ = 150

1 b.   

______ + 70 = 130

2 a.   

______ + 20 = 40

2 b.   

40 + ______ = 120

3 a.   

______ + 30 = 100

3 b.   

90 + ______ = 150

4 a.   

20 + ______ = 90

4 b.   

______ + 30 = 120

5 a.   

20 + ______ = 40

5 b.   

______ + 60 = 100

6 a.   

______ + 20 = 50

6 b.   

______ + 90 = 120

7 a.   

______ + 80 = 100

7 b.   

90 + ______ = 100

8 a.   

______ + 80 = 160

8 b.   

40 + ______ = 60

9 a.   

______ + 50 = 90

9 b.   

30 + ______ = 100

 

Answer Key

 

Copying permission: You are free to copy this worksheet to any number of students for their mathematics work. Do not distribute on websites, books, or any such material without permission.
Copyright 2003-2014 Maria Miller / HomeschoolMath.net free worksheets