Unit 4, Lesson 22-- Subtraction with Base Ten Models

Lesson 22-- Subtraction with Base Ten Models

Introduction

Hello Mathematicians! Today we will begin to work on strategies for finding an exact answer when you are solving subtraction problems. We will start by looking at how you can solve using models.

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Video

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Interactive

Directions:

• Using the virtual place value chart and base ten blocks, practice adding the following problems.
• Draw models and equations in your notebook.
  • 273 - 185=
  • 400 - 120=
  • 1,238 - 562=

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In Your Math Notebook:

Let’s get out our math journals and  work through the following application problem. Make sure you read the problem carefully, draw a picture to match your thinking and write and solve an equation.

Read, Draw, Write. DONE!

R (Read the problem carefully.) Luca brought 240 cookies to class. He gave 136 cookies to his classmates. How many cookies does Luca have now? D (Draw a picture.) W (Write and solve an equation.)

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