OBJECTIVE: Learn to work with unit rates.. How many of you have ever had to spend your own money for...

OBJECTIVE: Learn to work with unit rates.

How many of you have ever had to spend your own money for food? If you walk into a store and are starving but have to spend

your own money, how do you go about deciding what to buy?

Our lesson today on unit rates/unit prices will help us in making smart decisions

when choosing food to buy for our shopping.

Unit rates are rates in which the second quantity is 1.

unit rate: 30 miles,1 hour

or 30 mi/h

The ratio 903

can be simplified by dividing:

903

= 301

Example 1: Finding Unit Rates

Geoff can type 30 words in half a minute. How many words can he type in 1 minute?

Write a rate.

=

Geoff can type 60 words in one minute.

Multiply to find words per minute.

60 words 1 minute

30 words minute

12

30 words • 2 minute • 212

16 oz. coke - $1.99

24 oz. coke - $2.79

32 oz. coke - $3.29

10 oz. bag skittles - $0.79

14 oz. bag skittles - $0.99

20 oz. bag skittles - $1.99

Coach Smith is purchasing warm up shirts for his basketball team. Which store has the best price per shirt?

A. Store A sells 20 shirts for $310

B. Store B sells 15 shirts for $224.85

C. Store C sells 8 shirts for $122

D. Store D sells 3 shirts for $44.75

Find the total price

1. Michelle buys 3 shirts for $12.99 each. How much did she spend?

2. John drives 75 miles per hour for 4 hours. How far did he drive?

Find the total price.

3. Mark works for 6 hours making $8.50 an hour. How much did he earn?

4. Alicia writes a 7 page essay that has 200 words per page. How many total words are in the essay?

On your index card……1) Put your name on the top2) Answer the following question, “How would you use unit rate/unit price in yourlife?” in a complete sentence or two with at least 2 examples.3) Rate yourself 1 to 5 on how well you understand unit rate. 1 being you need

a lot of extra help, 2 being you need a little extra help, 3 being you are just okay, 4 being you understand it for the most

part, 5 being you have mastered and could ace the quiz and could help others!