Lesson Plan: Subtracting Tens from Three-Digit Numbers Mathematics
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.
