Mental Math for Second Grade

January 19, 2014

My students will be mentally subtracting 10 and 100 from a given number.  Our math series isn’t aligned with our common core standards so I have to create many things for my class.  Click here for a FREE copy of the standard NBT.8 for second grade.



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  • Anonymous January 19, 2014 at 9:41 pm

    Thanks. My kiddos struggle with this once the number is no longer on the number grid. This will be great practice!

  • Unknown January 19, 2014 at 10:18 pm

    This will help for me too.

    My problem is they have all of these common core strategies but they can't fluently add their basic math facts. Any suggestions?

  • Anonymous January 19, 2014 at 10:20 pm


  • Sara January 20, 2014 at 2:36 am

    Thank you for sharing:)!

  • Disneymum (Kristi) January 20, 2014 at 3:09 am

    Thank you this is fabulous!

  • Jean Robinson January 20, 2014 at 3:28 am

    Awesome freebie Shelly! Perfect for my kiddo's to do for morning work!
    Diving Into 2nd Grade

  • Brandi January 20, 2014 at 5:04 am

    Thanks for the freebie! Will be adding it to my math work stations!

  • cc January 23, 2014 at 1:44 am

    I just found your web site….I'm in LOVE!
    Thank you so very much!

  • Christa Swaney February 4, 2015 at 3:22 am

    Thanks! I just bought the book It Makes Sense :Using the Hundreds Chart. It has many fabulous ideas for this! Great blog!


  • Unknown April 10, 2015 at 1:52 am

    Just what i was looking for! Thanks

  • Unknown December 1, 2016 at 10:40 pm

    These are great for my enrichment group! Thanks so much!

  • Unknown September 14, 2018 at 5:44 am

    Thank you very muh, the worksheets are amazin and well designed.

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