Lesson Plan: Subtracting Tens from Three-Digit Numbers Mathematics

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This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to model subtracting a multiple of ten from a three-digit number and investigate which digits in the number change.

Objectives

Students will be able to

subtract tens from three-digit numbers without regrouping,
count back in tens to subtract,
model subtraction with place value blocks or counters,
model subtraction on number lines.

Prerequisites

Students should already be familiar with

place value of three-digit numbers.

Exclusions

Students will not cover

numbers above 1,000,
the column method.

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