____________________
-
2
=
1
1
+
____________________
=
6
6
-
4
=
____________________
7
+
____________________
=
8
____________________
-
2
=
6
2
+
____________________
=
4
3
-
3
=
____________________
5
+
____________________
=
7
____________________
-
8
=
1
3
+
____________________
=
8
