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Lesson Plan: Estimating Differences between Three-Digit Numbers: Rounding Mathematics • Second Year of Primary School
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to estimate the difference between three-digit numbers using rounding strategies.
Objectives
Students will be able to
- use rounding to estimate differences,
- use estimating to check differences,
- solve problems involving rounding to estimate differences.
Prerequisites
Students should already be familiar with
- rounding three-digit numbers to the nearest 10,
- rounding three-digit numbers to the nearest 100,
- identifying errors in rounding,
- subtracting three-digit numbers.
Exclusions
Students will not cover
- rounding decimal numbers,
- compatible numbers.
