Challenging Word Problems (beginning on pg. 10):
00:13 – #3
03:42 – #4
06:52 – #5
10:18 – #6
14:24 – #7
18:03 – #8
21:18 – #9
24:06 – #10
27:16 – #11
29:38 – #12

Challenging Word Problems (beginning on pg. 17):
32:48 – #1
34:34 – #2
38:56 – #3
42:34 – #4
45:30 – #5
47:59 – #6