Name: ________ Date:_________
Finding the unknown value (S3)
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1
1
4
–
1
1
=
5
6
2
3
–
1
=
4
3
3
5
–
x
=
1
6
3
4
x
–
1
=
7
4
20
5
3
–
x
=
7
4
6
12
6
x
–
1
=
1
4
6
12