Lesson Plan: Estimating Sums of Two-Digit Numbers: Rounding Mathematics • 3rd Grade
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to estimate the sum of two-digit numbers by rounding to the nearest ten.
Objectives
Students will be able to
- round two-digit numbers to the nearest ten,
- round two two-digit numbers to estimate their sum,
- apply estimation strategies to problem solving.
Prerequisites
Students should already be familiar with
- adding two-digit numbers on a number line,
- adding two-digit numbers using the column method.
Exclusions
Students will not cover
- three-digit numbers.