Day 1-2: Adding and Subtracting Decimals with Models

Adding and Subtracting Decimals

Introduction

In this unit, you will learn how to add and subtract decimals to the hundredths place, model decimals to help understand their value and what happens to the value when they are added or subtracted. 

Today, you will learn how to add and subtract decimals with hundredths grids.

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Warm Up

Before we begin, let’s explore!

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Mini Lesson

Before beginning the activity below, complete the following:

1. Print out the Adding and Subtracting Decimals with Models Activity below. 
2. Glue them into your journal.

Adding and Subtracting Decimals with Model Activity Download Adding and Subtracting Decimals with Model Activity

Now that we have explored some models, the tutorial below will help you to understand how to use hundredths grids to add and subtract decimals. Use this tutorial as a guide to help you complete the activity. 

In your journal: Write down any and all information that will help your understanding from the presentation below. 

 

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