Name: ________ Date:_________
Finding the unknown value (S40)
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1
1
2
–
1
2
=
3
4
2
2
–
1
=
5
3
3
5
–
x
=
1
6
3
4
x
–
1
=
7
6
30
5
1
–
x
=
1
5
6
30
6
x
–
1
=
5
3
4
12