2.OA.1 Addition and Subtraction Within 100



This 2.OA.1 Addition and Subtraction Within 100 unit focuses on the Common Core math standards 2.OA.1. This asks students to solve one-step addition and subtraction problems within 100, as well as explore two-step addition and subtraction problems and word problems with unknowns in all places. There are daily lesson plans, whole group activities, partner practice activities, MATH group centers, exit slips, and assessments.

Included in the 7 daily lesson plans:

  • Whole group activity
  • Partner practice activity
  • MATH group: Math writing, Apply new skills, Teacher time, Hands-on math (Teacher time is differentiated learning opportunities for remediation, on-level, and enrichment.)
  • Exit slip


2.OA.1 Focus:

–First Day- Using the ‘BURST’ method

–Second Day- Addition Word Problems within 50

–Third Day- Subtraction Word Problems within 50

–Fourth Day- Addition Word Problems within 100

–Fifth Day- Subtraction Word Problems within 100

–Sixth Day- Solving Word Problems with Unknowns in All Positions (missing addends, minuends, and subtrahends)

–Seventh Day- Two-Step Word Problems


Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

This math unit is part of a 2nd grade OA bundle. Click HERE for the bundle.

This unit is also part of a full-year Common Core Standards based bundle that you can find HERE.

The 2.OA.1 activities that are included in my short answer, centers, printables, and interactive notebooks are similar but have all been changed to fit these lesson plans. The short answers have different prompts and are now part of MATH groups, the printables & interactive notebooks have been updated and are used during the ‘Apply new skills’ part of MATH groups.

This 2.OA.1 Addition and Subtraction Within 100 Unit purchase is for one single classroom only.
If you want to share with other classrooms, make sure to buy the extra licenses here. Please contact me for a site license quote at jessica.L.tobin@gmail.com.


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