Wednesday, April 6, 2011

Two-Digit by Two-Digit Multiplication

In math this week, we learned how to multiply two-digit numbers. Some of us already knew one way to do this using something Mrs. Alaniz calls an "algorithm".  

But Mrs. Alaniz taught us to multiply two-digit numbers by using an array.  She learned it and could hardly wait to show us!  This is what it looks like:


Have you tried this strategy? Don't forget to break the numbers apart first. It's important to know several strategies to solve a problem.  We love it!  Have you learned this method? 
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6 comments:

  1. student #12April 6, 2011 at 8:29 PM

    This is a great way of teaching how to multiply two-digit numbers. It is now easier to start multiplying like this. It makes more sense now.

    ReplyDelete
  2. Student 18April 7, 2011 at 1:55 PM

    What a good way of teaching two digit numbers!!

    ReplyDelete
  3. Student 19April 7, 2011 at 1:55 PM

    This is a very creative way to do math! I wonder if you can do that grid in another form/shape!

    ReplyDelete
  4. Student #1April 13, 2011 at 6:42 PM

    I loved this method of multiplying 2-digit numbers! Can you do the same in a star?

    ReplyDelete
  5. Student 18April 18, 2011 at 3:53 PM

    What a great way of sharing math!!!

    ReplyDelete
  6. student11April 29, 2011 at 12:11 PM

    This is a great way to multiply two digit numbers.It is fun,easy,and awesome.

    ReplyDelete

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