Simplifying Numerical Expressions

A Shopping Problem

Opening

A Shopping Problem

Watch this video about how Karen and Lucy used the distributive property to solve a problem they encountered while shopping.

Here are the steps that Karen and Lucy followed to figure out the total price of the notebooks:

6($1.85)=6($2$0.15)=6($2)6($0.15)=$12$0.90=$11.10

 

Notice that Karen and Lucy distributed multiplication over subtraction.

  • Can you explain why it is possible to use the distributive property in this way?

VIDEO: Girls Buying Notebooks