OML Search

Distributive and Commutative Properties




 

Videos to help Grade 3 students learn how to apply the distributive and commutative properties to relate multiplication facts 5 × n + n to 6 × n and n × 6 where n is the size of the unit.

Common Core Standards: 3.OA.4, 3.OA.5, 3.OA.7, 3.OA.9, 3.OA.1, 3.OA.2, 3.OA.3, 3.OA.6

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 3, Grade 3, Lesson 2

Application Problem

Jocelyn says 7 fives has the same answer as 3 sevens + 2 sevens.
Is she correct? Explain why or why not.

Note: This problem reviews the commutative property from Lesson 1, and also previews the first fact used in the Concept Development to ensure all students’ automaticity with the answer.

Concept Development

What are 5 sevens, 5 × 7, and 7 × 5 all equal to? 35.

Compare 5 × 7 and 6 × 7. What is the difference between them?
6 × 7 has one more group of 7 than 5 × 7.




Lesson 2 Homework

1. Each box has a value of 9.
Unit form: _____________
Facts: 5 × ____ = ____ × 5
Total = ____

Unit form: 6 nines = ______ nines + ______ nine
= 45 + ______
= ______
Facts: ______ × ______ = ______
______ × ______ = _______

2. There are 6 blades on each windmill. How many total blades are on 7 windmills? Use a fives fact to solve.
4. Markuo spends $27 on some plants. Each plant costs $9. How many plants does he buy?
3. Juanita organizes her magazines into 3 equal piles. She has a total of 18 magazines. How many magazines are in each pile?


 

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 widget 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