Add and Subtract with Facts (up to 20)

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.

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

• 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

• Use Facts with 5 on a Ten-Frame
• Add and Subtract with Facts (up to 10)

• Add Doubles and Near Doubles

• Break Apart Numbers to Add
• Solve Addition and Subtraction Real-World Problems
• Add Tens
• Subtract Tens