Name: ________ Date:_________
Finding the unknown value (S25)
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1
1
1
–
2
=
2
3
2
3
–
3
=
4
5
3
1
–
x
=
1
4
20
4
x
–
1
=
3
4
20
5
3
–
x
=
1
4
2
4
6
x
–
1
=
7
5
3
15