18
-
3
=
____________________
14
+
2
=
____________________
12
+
4
=
____________________
8
-
3
=
____________________
5
+
4
=
____________________
20
-
6
=
____________________
15
-
4
=
____________________
16
+
3
=
____________________
15
-
5
=
____________________
4
+
3
=
7
