OML Search

Number of Groups in Division




 

Videos and solutions to help Grade 3 students understand the meaning of the unknown as the number of groups in division.

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

Related Topics:
Lesson Plans and Worksheets for Grade 3

Lesson Plans and Worksheets for all Grades

More Lessons for Grade 3

Common Core For Grade 3

New York State Common Core Math Module 1, Grade 3, Lesson 5

Lesson 5 Concept Development

Problem 1: Division as fair-share, the unknown as the number of groups.
I am having a party. 18 people are coming. I know that 6 people can sit at each table, but I'm not sure how many tables I'll need.
Problem 2: Relate finding the number of groups to counting by the divisor.
I bought 15 glue sticks. 3 glue sticks come in each pack. How many packs did I buy to get a total of 15?
Problem: Emma is drawing horses. She draws 4 legs on each horse, and a total of 24 legs.
a. Use a count-by to find the number of horses Emma draws. Make a drawing to match your counting.
b. Write a division sentence to represent the problem.

Lesson 5 Homework

3. Divide 12 buckets of paint into groups of 3.

12 ÷ 3 = _______
6. Jacob is drawing cats. He draws 4 legs on each cat, and a total of 24 legs.

a. Use a count-by to find the number of cats Jacob draws. Make a drawing to match your counting.

b. Write a division sentence to represent the problem.




Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


OML Search


We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.


[?] Subscribe To This Site

XML RSS
follow us in feedly
Add to My Yahoo!
Add to My MSN
Subscribe with Bloglines