Name: ________ Date:_________
Finding the unknown value (A8)
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1
7
+
1
1
=
8
3
2
7
+
5
=
8
7
3
5
+
x
=
3
6
2
4
x
+
1
=
9
5
20
5
1
+
x
=
7
2
5
10
6
x
+
1
=
11
4
6
12