Name: ________ Date:_________
Finding the unknown value (A31)
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1
5
+
3
=
9
8
2
1
+
1
=
9
10
3
3
+
x
=
1
3
4
20
4
x
+
2
=
1
5
3
12
5
1
+
x
=
5
4
6
12
6
x
+
1
=
3
2
4
4