Estimate Differences

Estimate differences by rounding numbers.

3rd Grade - Math - Subtract Multi-Digit Numbers

About This Skill

On Iqleel, Grade 3 students will learn the important skill of estimating differences. Before finding the exact answer, learners will practice rounding multi-digit numbers to the nearest ten or hundred. This allows them to quickly find an approximate answer, a key strategy for checking whether their final subtraction is reasonable and makes sense in word problems.

Skills & Topics

  • Problem Solving and Logic
  • Number Sense and Operations
  • Whole Numbers
  • Place Value
  • Subtraction
  • Word Problems
  • Estimation
  • Subtract
  • Difference
  • Minus Sign
  • Operations
  • Equation
  • Inverse Operation
  • 4-Digit Numbers
  • Algorithms
  • Regrouping
  • 3-Digit Numbers
  • Estimate

Curriculum Alignment

  • AC9M3N05: estimate the quantity of objects in collections and make estimates when solving problems to determine the reasonableness of calculations
  • ENG-MATH-Y3-AS.5: Estimate the answer to a calculation and use inverse operations to check answers.
  • NY-3.OA.8
  • 3.OA.D.8: Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
  • 3.OA.D.8
  • MATH.3.4.B
  • G3.B2.3
  • MA.3.NSO.1.4
  • BC.MATH.G3.CC.02
  • AB.MATH.G3.MAT3-OI1-GQ2-LO1
  • ZA.CAPS.MATH.G3.NOR.1.12

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