Math teachers used to do things like tell you to count by twelves (or some other number) just to give your brain some exercise (yes one of mine did that) and maybe a head ache. I wonder if she had stock in Bayer or Tylenol????
OFFICIAL SOLUTION 1. Dozens 2. Eye 3. the (twice) 4. On a microwave, 99 would be 1 minute and 39 seconds and 100 would be 1 minute. 5. Small square in a large square ... see image ...