Friday, September 30, 2011

What's So Special About 11?

Hello Sixth Grade!

Here is the answer to question 6 on your worksheet. Please copy it down so you have it in your notes:

6. Summarize any pattern you see when multiplying 11 by a two-digit number.
Answer: The ones digit of the factor is the same as the ones digit of the product. The hundreds digit of the product is the same as the tens digit of the factor. The tens digit of the product is the SUM of the digits of the factor. However, if the sum is 10, put the zero in the tens place of the product, and add 1 to the hundreds digit.