PA-U3.2a Lesson: Distributive Property

Unit 3 Lesson 2a:
Distributive Property

Objective:

Students are going to use the distributive property to simplify expressions.

Concept:

​Distributive Property

​Example 1:

​Example 2:

​Example 3: Error Analysis

The End

If you were absent or missed the example explanations, please view the next three slides, and copy the example explanations into your notes.

​Example 1:

​Example 2:

​Example 3: Error Analysis

Jodi and Oscar are working to simplify: 3(4n - 9). Jodi says the answer is -15n, and Oscar says the answer is 12n - 27. Is either student correct? Explain.


When you distribute the 3 to the 4n, the product is 12n, then when you distribute the 3 to the (-9), the product is -27. Those terms being unalike they cannot be combined, so the result is 12n - 27, which matches Oscar's result.