Distributive Property (Decompose Units)

Examples, solutions, and 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

New York State Common Core Math Grade 3, Module 1, Lesson 18, Lesson 19

Worksheets for Grade 3, Module 1, lesson 18 (pdf)
Worksheets for Grade 3, Module 1, lesson 19 (pdf)

Add & Subtract 5 Worksheet Sprint A
Add & Subtract 5 Worksheet Sprint B

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?

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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) = ______ + ______
   = _____
   
2. Alex draws the array below to find the answer to 35 ÷ 5. Explain Alex’s strategy.

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Lesson 19 Exit Ticket Sample Solution

Complete the equations below to solve
22 ÷ 2 =

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