Day 9: Relating Addition to Subtraction

Introduction

Hi Mathematicians,

In this lesson you will learn how to relate addition to subtraction. This will help you solve subtraction problems with another strategy. For this lesson, you will watch a video, try it on your own with counters, and complete the interactive.

Let’s get started!

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Video

 

 

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Activity

Use your own part, part, whole chart (part, part, whole chart Download part, part, whole chart) and counters to solve these related equations.

 

8 - 6 =

6 + ___ = 8

 

7- 1 =

1 + ____ = 7

 

5-4 =

4 + ___ = 5

 

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