Name _______________________________
Date ____________
Investigating Unit Rates
You will complete both sections on this project, which all incorporate the use of rates
and unit rates. If you are unable to go to the store, use the ads which come in the
newspaper or mail. Ads used must be attached to this worksheet. It is due Wednesday,
February 22nd.
Part I
40 points: All
boxes filled in,
all calculations
are correct,
questions are
answered in
complete
sentences.
Part II
40 points: All
boxes filled in,
all calculations
are correct,
questions are
answered in
complete
sentences.
Part III
20 points:
Presentation is
neat, all items
are included
and correct,
and is within
time limit.
Grading Rubric
30 points:
20 points:
Most boxes
Some boxes
filled in, most filled in, most
calculations
calculations
correct,
are correct,
questions are
most questions
answered in
answered in
complete
complete
sentences.
sentences.
30 points:
20 points:
Most boxes
Some boxes
filled in, most filled in, most
calculations
calculations
correct,
are correct,
questions are
most questions
answered in
answered in
complete
complete
sentences.
sentences.
15 points:
10 points:
Presentation is Presentation is
neat and
not neat, not
correct but not correct, and/or
in time limit.
not within
time limits
10 points: Few
boxes filled in, some
calculations
are correct,
questions are not
answered in
complete
sentences.
10 points: Few
boxes filled in, some
calculations
are correct,
questions are not
answered in
complete
sentences.
5 points:
Presentation is not
neat, not correct, and
not within time
limits.
Go the Extra Mile!!!
To earn 5 extra points, have a parent snap a picture of you at the grocery store
working hard to locate the items for this project and turn it in with your packet!
Part I - Choose the Better Buy
For this project you will collect data about five products in your local grocery store. If
you are unable to go to the store, use the ads which come in the newspaper or mail. Ads
used must be attached to this worksheet.
1. Choose a product which has two sizes.
2. Record the price and unit rate of each size.
3. Compare the unit rate for each product and tell which is the best buy.
4. Then calculate how much you would save per year by buying the cheaper item if
it was purchased each week.
Item
Example:
Sprite
12-pack and
2-liter bottle
(unit rate per oz.)
1.
2.
3.
4.
5.
Size #1
Size #2
How much would
you save in 1 yr?
$.04 - $.03 = $.01
Price: $5.49
Price: $2.25
Unit Rate: $5.49
144 oz.
= $.04/oz.
Price:
Unit Rate: $2.25
$.01 x 52 weeks
67.6 oz. = $.52/oz.
= $.03/oz.
Price:
Unit Rate:
Unit Rate:
Price:
Price:
Unit Rate:
Unit Rate:
Price:
Price:
Unit Rate:
Unit Rate:
Price:
Price:
Unit Rate:
Unit Rate:
Price:
Price:
Unit Rate:
Unit Rate:
Part I - Continued:
1. At what grocery store did you find these items/prices?
2. How much would you save buying all 5 of the items listed over the span of one
year?
3. If you used a coupon that took off 50 cents from either price, how much would
you save by using that coupon every week for a year?
4. How can you use unit rates when shopping for these items?
Part II - Ratios and Unit Rates
Change the ratios below to unit rates. An example is given.
Ratio
1) 228 miles in 6 hours
Rate
(Ratio as a Fraction)
228 miles
6 hours
Unit Rate
38 mph or 38 mi
1 hour
2) 372 students for 12
teachers
3) $47.95 for 7 hours work
4) $5.40 for 1 dozen bagels
5) 57 sit-ups in 3 minutes
6) 500 words read in 8
minutes
7) 216 miles on 16 gallons
of gas
8) 36 commercials in 2
hours
of TV
1. Choose one of the above types of unit rates and tell how it applies to your daily
life?
Part III – Presentation:
1. Choose 1 grocery item and present it showing the unit price for each. Which is the
better deal? How much would you save if you bought this product weekly for a
year?
2. Choose how you will present your finding.
a. You may use a poster to show your product (be sure to have a picture). You
MUST show all work in calculating unit cost and savings.
b. You may use PowerPoint to show your findings.
3. Present your finding to the class. Your presentation should be no more than 2
minutes.
6th Grade Students: Shopping at the grocery store to determine Unit Rates.