Name: ________ Date:_________
Finding the unknown value (S29)
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1
8
–
2
=
9
3
2
2
–
1
=
3
6
3
3
–
x
=
4
5
15
4
x
–
1
=
1
3
6
5
4
–
x
=
2
5
3
15
6
x
–
1
=
1
6
3
2