Unit 3, Lesson 5 -- Modeling Division with Arrays

Lesson 5-- Modeling Division with Arrays

Introduction

Hello Mathematicians! We've learned about using models of equal groups to solve division problems. Today we will work on using arrays to solve division.

Video

Interactive

Part 1 Directions:

  • Make an array for the following division problems.

  • In your notebook, draw the array model.  Write the multiplication and division fact that the array represents.

    • Example: 18 ÷ 3 would be 3 equal rows with 18 total counters.  18 ÷ 3 = 6, and 3 X 6 = 18.

    • 18 ÷ 2 = 

    • 21 ÷ 3 = 

    • 28 ÷ 4 = 

    • 30 ÷ 5 =

Part 2 Directions:

  • Open the Google Drawing task below, and make a copy.
  • Create an array for the story problem.  Fill in the missing digits.

Dividing with Arrays Interactive Drawing Links to an external site.

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.)

Derrick is putting his 27 new stickers into his sticker book. If he puts his stickers into 9 rows with the same number of stickers in each row, then how many stickers would be in each row?

D (Draw a picture.)

W (Write and solve an equation.)

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