Name: ________ Date:_________
Finding the unknown value (S4)
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1
2
4
–
1
1
=
5
3
2
3
–
1
=
4
5
3
5
–
x
=
1
6
6
4
x
–
3
=
3
5
20
5
1
–
x
=
1
3
6
6
6
x
–
1
=
1
5
6
30