Friends of Five
1
+
=
5
3
+
=
5
2
+
=
5
5
+
=
5
4
+
=
5
Buddies to Ten
3
+
=
10
8
+
=
10
7
+
=
10
4
+
=
10
2
+
=
10
Double Trouble
2
+
2
=
5
+
5
=
7
+
7
=
3
+
3
=
3
+
3
=
What number comes next
14
9
12
9
17
=
=
=
=
=
What number comes before
=
=
=
=
=
5
14
9
13
19