Add 2-digit Numbers Using a Number Line

Add 2-digit numbers using a number line to find the sum!

2nd Grade - Math - Add within 100

About This Skill

Where will you land on the number line? Grade 2 students practice adding 2-digit numbers by making 'jumps' for tens and ones to reach the sum. As questions adapt to their progress, children use visual models to break apart numbers and move step-by-step toward the final answer. With instant feedback on every jump, this practice builds flexible mental math strategies and a strong understanding of place value.

Skills & Topics

  • Number Sense and Operations
  • Addition
  • Whole Numbers
  • Place Value
  • Add
  • Addend
  • Adding
  • Digit
  • Equations
  • Sum
  • 2-Digit Numbers

Curriculum Alignment

  • AC9M2N04: add and subtract one- and two-digit numbers, representing problems using number sentences and solve using part-part-whole reasoning and a variety of calculation strategies
  • ENG-MATH-Y2-AS.2: Solve problems with addition and subtraction by applying their increasing knowledge of mental and written methods.
  • NY-2.MD.6
  • 2.MD.B.6: Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, ..., and represent whole-number sums and differences within 100 on a number line diagram.
  • 2.MD.B.6
  • MA.2.NSO.2.3
  • MATH.2.4.B
  • G2.B2.4
  • BC.MATH.G2.CONTENT.04
  • AB.MATH.G2.MAT2-OI1-GQ2-LO1
  • ZA.CAPS.MATH.G2.NOR.1.16
  • SG.MATH.P2.NA.WN.2.1

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