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Lesson Plans and Worksheets for Grade 3

Lesson Plans and Worksheets for all Grades

More Lessons for Grade 3

Common Core For Grade 3

Examples, solutions, and videos to help Grade 3 students learn how to interpret the unknown in division using the array model.

Common Core Standards:3.OA.1, 3.OA.3

New York State Common Core Math Grade 3, Module 1, Lesson 6

Worksheets for Grade 3

The following diagram shows how to use the array model for division and multiplication. Scroll down the page for more examples and solutions.

Lesson 6 Concept Development

Word Problem: 20 children play a game. There are 5 children on each team. How many teams play the game? Write a division sentence to represent the problem.

Problem 1: Relate division to an array model.

Problem 2: Use an array to relate the unknown factor in multiplication to the quotient in division.

Problem 3: Relate multiplication and division.

Word Problem: I have 12 books. I put 4 books in each shelf. How many shelves will I need?

Lesson 6 Homework

- Mr. Hannigan puts 12 pencils into boxes. Each box holds 4 pencils. Circle groups of 4 to show the pencils in each box.

Mr. Hannigan needs _______ boxes.

______ × 4 = 12

12 ÷ 4 = ______ - Mr. Hannigan places 12 pencils into 3 equal groups. Draw to show how many pencils are in each group.

There are _______ pencils in each group.

3 × ______ = 12

12 ÷ 3 = ______ - Use an array to model Problem 1.

a) ______ × 4 = 12

12 ÷ 4 = ______

The number in the blanks represents:

b) 3 × ______ = 12

12 ÷ 3 = ______

The number in the blanks represents: - Judy washes 24 dishes. She then dries and stacks the dishes equally into 4 piles.

How many dishes are in each pile?

24 ÷ 4 = _______

4 × ________ = 24

What is the meaning of the unknown factor and quotient? - Nate solves the problem _____ × 5 = 15 by writing and solving 15 ÷ 5 = ____.

Explain why Nate’s method works. - The blanks in Problem 5 represent the number of groups. Draw an array to represent the number sentences.

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