Friends of Five
2
+
=
5
3
+
=
5
1
+
=
5
5
+
=
5
4
+
=
5
5
+
=
5
2
+
=
5
4
+
=
5
3
+
=
5
1
+
=
5
Buddies to Ten
3
+
=
10
8
+
=
10
1
+
=
10
6
+
=
10
5
+
=
10
4
+
=
10
7
+
=
10
9
+
=
10
2
+
=
10
3
+
=
10
Double Trouble
2
+
2
=
5
+
5
=
1
+
1
=
4
+
4
=
9
+
9
=
0
+
0
=
6
+
6
=
4
+
4
=
3
+
3
=
10
+
10
=