Name: ________ Date:_________
Finding the unknown value (A5)
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1
7
+
1
1
=
9
3
2
1
4
+
1
1
=
7
7
3
1
+
x
=
9
4
20
4
x
+
1
=
11
3
15
5
3
+
x
=
19
4
5
20
6
x
+
2
=
1
1
3
3
3