Name: ________ Date:_________
Finding the unknown value (A25)
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1
2
+
3
=
3
10
2
6
+
1
=
7
6
3
2
+
x
=
1
1
3
3
4
x
+
1
=
19
5
20
5
2
+
x
=
11
5
3
15
6
x
+
1
=
17
5
4
20