Add and Subtract with Facts (up to 20)

Master addition and subtraction within 20 using efficient strategies.

2nd Grade - Math - Add & Subtract with facts up to 20

About This Skill

Develop fluency in adding and subtracting within 20 by using strategies such as making ten, doubles, and related facts. Strengthen problem-solving skills by recognizing number patterns and applying mental math techniques for quick and accurate calculations.

Skills & Topics

  • Number Sense and Operations
  • Addition
  • Subtraction
  • Add
  • Addend
  • Adding
  • Sum
  • Subtract
  • Difference
  • Fact Family

Curriculum Alignment

  • AC9M2A02: recall and demonstrate proficiency with addition facts to 20; extend and apply facts to develop related subtraction facts
  • ENG-MATH-Y2-AS.3: Recall and use addition and subtraction facts to 20 fluently, and derive and use related facts up to 100.
  • NY-2.OA.2a
  • 2.OA.B.2: Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
  • 2.OA.B.2
  • MA.2.NSO.2.1
  • MATH.2.4.A
  • G2.B2.2
  • BC.MATH.G2.CONTENT.03
  • AB.MATH.G2.MAT2-OI1-GQ2-LO1
  • ZA.CAPS.MATH.G2.NOR.1.16

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