Name: ________ Date:_________
Finding the unknown value (A27)
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1
5
+
2
=
8
5
2
2
+
1
=
5
3
3
2
+
x
=
5
3
6
4
x
+
3
=
1
2
5
5
5
2
+
x
=
5
3
6
6
6
x
+
1
=
17
3
7
21