Name: ________ Date:_________
Finding the unknown value (A38)
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1
9
+
1
=
10
7
2
3
+
1
=
7
9
3
1
+
x
=
3
2
4
4
x
+
1
2
=
2
1
4
4
5
4
+
x
=
1
2
5
3
15
6
x
+
3
=
1
11
5
4
20