Name: ________ Date:_________
Finding the unknown value (S19)
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1
4
–
1
=
5
2
2
1
3
–
1
1
=
4
3
3
2
–
x
=
5
3
12
4
x
–
1
=
1
6
30
5
2
–
x
=
7
5
6
30
6
x
–
1
=
1
6
2
3