Gross Multiplication Facts

This level TWO multiplication table is only a little more difficult than the table in my previous post.  This puzzle uses 12 factors while the previous one used just 10. To find all these factors you have to be familiar with 144 multiplication facts, a requirement that sounds much more intimidating than it really is. (For example, 3 x 5 and 5 x 3 are counted as 2 different facts.) 144 is a fascinating number.  It is a dozen dozen, otherwise known as a gross. Therefore, completing this puzzle will help you review the gross multiplication facts!   If you haven't memorized all of the facts, there is a gross way to learn some of the gross multiplication facts.

Edwin A. Anderson Elementary School uses manipulatives and rhymes to teach the multiplication facts.  Their students learn two rhymes a week for sixteen week and are masters of the gross multiplication facts when they are done. Five of the rhymes are actually a little gross:

3x3, nine cuts on my knee

3x8, 24 horseflies on my plate

4x7, 28 spiders are webbin'

6x8, fishing bait, count slimy worms all 48

7x7, roaches on a vine, yucky and scary all 49

You can read all of the rhymes here:

http://teacherpages.nhcs.net/schools/anderson/catherinemagruder/Pages/Multiplicationr.aspx

As you Find the Factors and fill in the gross multiplication facts, there are two things I'd like you to remember:

1. Don't write anything on the inside of the puzzle until you write down all the factors on the outside of the puzzle.

2. The only numbers allowed in the factor row and the factor column are the numbers from 1 to 12, and all 12 numbers must appear in both places.

Now you can click on this link, Find the Factors 1-12 excel file, to find 6 puzzles ranging in difficulty from level ONE to level SIX.