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Distributive Property (Decompose Units)




 

Videos to help Grade 3 students learn how to apply the distributive property to decompose units.

Common Core Standards:3.OA.3, 3.OA.5, 3.OA.7, 3.OA.8, 3.OA.1, 3.OA.2, 3.OA.4, 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 1, Grade 3, Lesson 18, Lesson 19

Lesson 18 Concept Development

Problem 1: Use number bonds to decompose numbers and apply the distributive property.

Lesson 18 Homework

1. Match.
2. 9 × 4 = ____________

(_______ 4) + (_______ 4) =

_______+ _______ = _______

9 × 4 = _______

3. Lydia makes 10 pancakes. She tops each pancake with 4 blueberries. How many blueberries does Lydia use in all?
4. Steven solves 7 × 3 using the distributive property. Show an example of what Steven’s work might look like below.

5. There are 7 days in 1 week. How many days are there in 10 weeks?



Lesson 19 Homework

1. Label the array. Then complete the equations to make statements that are true.

c) 24 ÷ 4 = _____ d.

(20 ÷ 4) =

(4 ÷ 4) =

(24 ÷ 4) = (20 ÷ 4) + (____ ÷ 4)

= ______ + ______

= _____

5. Alex draws the array below to find the answer to 35 ÷ 5. Explain Alex’s strategy.
Lesson 19 Exit Ticket Sample Solution

Complete the equations below to solve 22 ÷ 2 =


 

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.


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