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