Calculating Unit Rate - Ms. Arnold 6th Grade Math

Calculating
Unit Rate
I can find the unit rate
of an item
Flashback
You are at the grocery store and
you see the following sale sign:
A 10-lb bag of
cherries
On sale for $8
How much does one lb
of cherries cost??
To find the price of 1 pound of cherries,
we take the total price we paid and divide
it by the number of pounds of cherries
bought
Total price
$8
80 cents/lb
Amount of
cherries
bought
10 lb
80 cents per pound is the UNIT RATE
A
ratio that compares two
quantities measured in
different units is called a
rate.
For example:
•  Miles per hour
•  Price per pound
•  Calories per serving
A unit rate is a rate that
has a denominator of 1 unit.
Find the Unit Rate for
each of the following
situations:
On a field trip there are
60 students on 4 buses.
What is the unit rate of
students per bus?
15 students per bus
Find the Unit Rate for
each of the following
situations:
In the gymnasium there
are 200 chairs in 50 rows.
What is the unit rate of
chair per row?
4 Chairs per row
Find the Unit Rate for
each of the following
situations:
On your way to the beach,
you calculate you have
driven 480 miles in 8 hours.
What is the unit rate of miles
per hour?
60 miles per hour
Find the Unit Rate for
each of the following
situations:
On your bag of Cheetos you
read that there are 600
calories for 8 servings.
What is the unit rate of
calories per serving?
75 calories per serving
Find the Unit Rate for
each of the following
situations:
Mrs. Smith can type 500
words in 20 minutes.
What is the unit rate of words
Mrs. Smith can type per min?
25 Words per minute
Calculating
Unit Rate
Steal or Scam?
Unit Rate Activity
I can find the unit rate of an item
For the 1st time ever, your parents have
sent you to the grocery store alone.
They have sent you with a limited budget,
and it is your task to get the most for
your money.
To do this, you decide that you will check each
sale price to find out whether it is a
Steal -a REALLY awesome
BARGAIN
or a
Scam -the sale actually cost more than an
originally priced item
For each featured item, find the
unit rate.
Decide whether it is a steal or a scam
Show all your work on your white board.
(this includes your steal or scam
decision)
Potatoes on sale 8 for
$8.99
Original price $1.19
STEAL
Carrots are on sale
for 2 lbs for $3.99
Original price $0.99 per pound
SCAM
Cans of corn are on
sale 10 for $10
Original price $.79 per can
SCAM
Hamburger is on sale
for 5 lbs for 12.29
Original price $2.80 per pound
STEAL
Cheese is on sale for
$5 for 4 cups.
Original price $1.79 per pound
STEAL
Cans of green beans
are on sale 5 for $8.29.
Original price $1.49 per can
SCAM
Sandwich meat is on
sale for 3 packages for
$9.99
Original price $3.50 per package
STEAL
Pumpkin pies are on
sale 5 for $13.29
Original price $3.29 per pie
STEAL
Carton of eggs are on
sale 2 for $4.99
Original price $2.13 per carton
SCAM
Ice Cream is on sale 4
gallons for $5.29
Original price $1.25 per gallon
SCAM
Exit Slip