Name: ________ Date:_________
Finding the unknown value (S4)
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1
1
3
–
1
2
=
5
5
2
1
–
1
=
2
5
3
4
–
x
=
7
5
15
4
x
–
1
=
1
2
4
5
2
–
x
=
3
5
4
20
6
x
–
1
=
1
4
5
20