Standard #: MA.2.A.2.2 (Archived Standard)


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Add and subtract multi-digit whole numbers through three digits with fluency by using a variety of strategies, including invented and standard algorithms and explanations of those procedures.


Remarks


Activities include mental computation.

Example: For 141 - 99, the standard algorithm uses regrouping. An invented approach may be to subtract 100 and add 1 (141-100+1). Another invented approach is to add one to both the minuend and subtrahend so that you have 142 - 100, which can be done mentally.



General Information

Subject Area: X-Mathematics (former standards - 2008)
Grade: 2
Body of Knowledge: Algebra
Idea: Level 2: Basic Application of Skills & Concepts
Big Idea: BIG IDEA 2 - Develop quick recall of addition facts and related subtraction facts and fluency with multi-digit addition and subtraction.
Date Adopted or Revised: 09/07
Content Complexity Rating: Level 2: Basic Application of Skills & Concepts - More Information
Date of Last Rating: 06/07
Status: State Board Approved - Archived
Printed On:5/7/2025 3:09:23 AM
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