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More Addition on a Hundred Chart

Written by Donna Boucher

Donna has been a teacher, math instructional coach, interventionist, and curriculum coordinator. A frequent speaker at state and national conferences, she shares her love for math with a worldwide audience through her website, Math Coach’s Corner. Donna is also the co-author of Guided Math Workshop.

A friend recently explained to me how her daughter was showing her thinking for adding on a hundred chart, and I was intrigued. I asked her to send me a picture:

I love how the kids are showing their hundred chart thinking without the actual hundred chart. Notice also that they are apparently required to show their thinking two ways–in this case with an open number line and the partial hundred chart.

I made a little freebie that can be used to practice this type of recording. But as you see in the picture above, a simple word problem and a composition book work wonders!

19 Comments

  1. Anonymous

    Thanks for another great activity. I find myself checking almost every day to see what helpful things you have posted. Your blog has been a great help to me!

    Reply
    • Donna Boucher

      Thanks so much. That’s a huge compliment! 🙂

      Reply
  2. Teresa P.

    Great idea! I loved the freebie! You have been Boo-ed head over and join the fun! Fun in K/1

    Reply
    • Donna Boucher

      Glad you like the freebie!!

      Reply
    • Donna Boucher

      Thanks so much, Alison!

      Reply
  3. Miles from Montana

    This is awesome! Thank you for sharing!

    Reply
    • Donna Boucher

      You’re welcome!! 🙂

      Reply
  4. Sara at school

    Printing this out to try to help my little low kids see how to do this. Thanks for sharing! Sara

    Reply
    • Donna Boucher

      Sure thing, Sara! It really helps them understand what’s going on behind all that regrouping. 🙂

      Reply
  5. Lady Hope

    Thank you for your blog and all that it entails! You are really helping me to become a better ESL teacher.

    Reply
    • Donna Boucher

      So happy that you’re finding my work useful. 🙂

      Reply
  6. Anonymous

    Am I blind, or are you guys? ‘Cause I don’t see anyone adding hundreds to anything on this page. And I don’t see how this chart would work with adding hundreds, either. How are you supposed to use this method to add 354+489?

    Reply
    • Donna Boucher

      This is a post about using a hundred chart to add, not adding hundreds. Although you could use similar methods: 354 + 400 is 754. 754 + 90 is 844, but I have to take 1 off because I only needed to add 89. So the sum would be 843.

      Reply
  7. Holly Young

    I think this is a crazy way to teach kids how to add and subtract.

    Reply
    • Unknown

      I do, too, Holly. It seems horribly inefficient and doesn’t enforce the concept of quantity. Do you, or any one else understand the rationale for this approach?

      Reply
    • Donna Boucher

      This is merely one piece of the overall picture. Students do LOTS of work with manipulatives to build the concept of quantity. They also move on to more efficient strategies. This particular activity helps build an understanding of the importance of place value in addition and subtraction by using the patterns in a hundred chart. It is a stepping stone to the traditional algorithm.

      Reply
  8. Richard Collette

    What age group is this appropriate for? Someone posted their kindergartner being assigned this worksheet for homework we are thinking this is developmentally inappropriate.

    Reply
  9. Nance Killion

    I love this, Donna! Perfect for the beginning of the year.

    Reply

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