Lesson Plan: Estimating Sums and Differences: Four-Digit Numbers Mathematics • 4th Grade

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This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to estimate sums and differences between numbers with up to four digits by rounding to the nearest ten, hundred, or thousand.

Objectives

Students will be able to

estimate sums by rounding to the nearest 1,000, 100, or 10,
estimate sums by rounding to the highest place value,
discuss the accuracy of estimates.

Prerequisites

Students should already be familiar with

rounding four-digit numbers.

Exclusions

Students will not cover

using compatible numbers to estimate sums and differences.