Lesson Plan: Subtraction of Numbers up to 1,000,000 | Nagwa Lesson Plan: Subtraction of Numbers up to 1,000,000 | Nagwa

# Lesson Plan: Subtraction of Numbers up to 1,000,000 Mathematics • 4th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use the most appropriate strategy to subtract numbers up to one million.

#### Objectives

Students will be able to

• subtract whole numbers up to one million using the formal algorithm,
• estimate to check the reasonableness of answers,
• mentally subtract whole numbers,
• choose the appropriate methods to subtract.

#### Prerequisites

Students should already be familiar with

• choosing the most appropriate method to add numbers up to one million,
• how to count back to subtract or find a difference,
• how to decompose numbers to find partial sums and differences,
• subtracting numbers with up to five digits using the formal algorithm.

#### Exclusions

Students will not cover

• subtracting numbers with more than six digits,
• subtracting decimal numbers.