# Multiplying & Dividing by Powers of 10 Lesson Plan

## Overview

Ever wondered how to teach multiplying and dividing decimals by powers of 10 in an engaging way to your 5th-grade students?

In this lesson plan, students will learn about multiplying and dividing by powers of 10 and their real-life applications. Through artistic, interactive guided notes, check for understanding, practice with a doodle coloring activity, and a maze worksheet, students will gain a comprehensive understanding of this topic.

The lesson ends with a real-life example that explores how multiplying and dividing by powers of 10 are used in everyday situations. Students will read and write about these applications to deepen their understanding further.

\$4.25

## Learning Objectives

After this lesson, students will be able to:

• Multiply decimals by powers of 10 and explain the effect of increasing the powers of 10 on the placement of the decimal point.

• Divide decimals by powers of 10 and articulate the impact of decreasing the powers of 10 on the position of the decimal point.

• Identify patterns in decimal multiplication and division by powers of 10, specifically related to the movement of the decimal point.

• Explain real life applications of multiplying and diving by powers of 10.

## Prerequisites

Before this lesson, students should be familiar with:

• Ability to multiply and divide whole numbers

• Basic understanding of decimals and how to read and write them

## Key Vocabulary

• Powers of 10

• Exponents

• Decimal Point

## Procedure

### Introduction

As a hook, ask students why understanding how to multiply and divide decimals by powers of 10 is important in real-life situations. Refer to the last page of the guided notes as well as the FAQs below for ideas.

Use the first page of the guided notes to introduce the concept of multiplying decimals by powers of 10, going through the 2 steps. Walk through how to place the decimal point when multiplying by powers of 10 based on the exponents. Teach students how to apply similar rules as in multiplication but in reverse when dividing by powers of 10. Highlight the impact of the exponents on the placement of the decimal point when dividing. Walk through the second example on the page.

Based on student responses during the introduction, reteach concepts that students may need extra help with. Allow students to practice finding the products and quotients for powers of 10 using the second page of the guided notes. If there is a wide range of proficiency levels in the class, consider pulling out students for reteaching while allowing more advanced students to begin work on the practice exercises.

### Practice

Have students practice multiplying and dividing decimals by powers of 10 using the practice worksheet provided in the resource (page 3-4). Students can work on the maze activity (page 3), and color by code activity (page 4) to reinforce the math concept. Walk around the classroom to answer any student questions or provide support as needed. Alternatively, you can assign it as homework for the remainder of the class or for additional practice outside of the classroom.

Fast finishers can further practice by working on the real-life application worksheet. This activity encourages students to read and write about real-life scenarios where multiplying and dividing decimals by powers of 10 are applied.

### Real-Life Application

Use the last page of the guided notes to bring the class back together, and introduce the concept of how multiplying and dividing decimals by powers of 10 is used in real-life situations, such as in scientific notation and the field of astronomy. Students read about using powers of 10 simplifies the handling of vast distances in astronomy and space exploration, making complex calculations more manageable. Refer to the FAQ for more ideas on how to teach it!