Lesson 3

Lesson 3 Summary

 

As you have seen in this lesson, there are a variety of strategies you can use to solve problems involving multiple rates. These same strategies work when using rates to solve for an unknown. You might

• use unit analysis
• estimate using proportional reasoning
• use equivalent ratios
• use unit rates
• use a function
• use a graph

Depending on the situation, choose the strategy that will work the best for you.

 

You may use these math skills many times in daily life.

• Being able to convert between the imperial and metric systems is a critical skill as Canadian society has not fully changed to the metric system.
  
  
• Since Canada shares close ties with the Unites States, currency conversion may be needed if you purchase something from the U.S. over the Internet or plan to make a trip there.
  
  
• Many people have cellphones, so analyzing phone plans to save money is important.

Whether you are watching television, surfing the Internet, or shopping for groceries, sound math skills help you make wise consumer decisions.