File - Mrs. Sanders' Website

```Name: __________________________ Date: ____________
Unit Costs, or: How to Avoid Getting Jipped at the Store
The cost per unit of something is how much it would cost to buy _________ unit.
If the item is measured in pounds, the cost per unit is the cost of _____________________.
If the item is measured in ounces, the cost per unit is the cost of _____________________.
To find the cost per unit, take the ___________________ of the item and _______________ it
by the ___________________ of the item.
Knowing the cost per unit can help you _____________________ different item to determine
which one is the ___________________.
To determine the best buy, choose the option that has the ________________ price per unit.
Ex 1a) A 10-ounce jar of peanut butter costs Ex 1b) A 20-ounce jar of peanut butter costs
\$3.00. What is the cost per unit?
\$5.00. What is the cost per unit?
Ex 1c) The _________ ounce jar is the best buy.
Ex 2a) A small bag of Skittles costs \$1.00 and Ex 2a) A bigger bag of Skittles costs \$4.00
contains about 50 skittles. What is cost per
and contains about 110 skittles. What is cost
unit?
per unit?
Ex 2c) The _____________ bag of Skittles is the best buy.
Ex 3a) A box of Fruit Loops costs \$3.99 for 32
ounces. What is cost per unit?
Ex 3b) A box of Captain Crunch costs \$2.99
for 24 ounces. What is cost per unit?
Ex 3c) Conclusion: __________________________________________________.
For each option, calculate the cost per unit.
A. Game Stop sells 9 video games for \$81.18.
A. Best Buy sells 12 video games for \$83.20.
What is the cost per unit?
What is the cost per unit?
B. At the Shell Station you can get 16 gallons of
gas for \$36.00. What is the cost per unit?
B. At BP you can get 12 gallons of gas for
\$32.00. What is the cost per unit?
C. Deijana paid \$27.99 for a cab to work. The
total distance to work is 3 miles. What is the cost
per unit?
C. Andrea paid \$55.98 for a cab to work.
The total distance to work is 6 miles. What is
the cost per unit?
D. Hats are on sale at Lids. You can buy 3 hats
for \$15.00. What is the cost per unit?
D. You can buy 5 hats for \$20.00 at WalMart. What is the cost per unit?
E. It costs Discount Auto \$225 to replace
headlights in 3 cars. What is the cost per unit?
E. Jiffy Light can replace 1 headlight for
\$75.00 per car. What is the cost per unit?
F. Mrs. Skrobe buys a 16 ounce bag of Laffy
Taffy for \$5.42. What is the cost per unit?
F. Mrs. Sanders buys a 16 ounce of
Starbursts for \$6.42. What is the cost per
unit?
KEY
Unit Costs, or: How to Avoid Getting Jipped at the Supermarket
The cost per unit of something is how much it would cost to buy one unit.
If the item is measured in pounds, the cost per unit is the cost of one pound.
If the item is measured in ounces, the cost per unit is the cost of one ounce.
To find the cost per unit, take the total price of the item and divide it by the quantity of
the item.
Knowing the cost per unit can help you compare different item to determine which one is
To determine the best buy, choose the option that has the lowest price per unit.
Ex 1a) A 10-ounce jar of peanut butter costs Ex 1b) A 20-ounce jar of peanut butter costs
\$3.00. What is the cost per unit?
\$5.00. What is the cost per unit?
\$3.00/10 = \$0.30 per ounce
\$5.00/20 = \$0.25 per ounce
Ex 1c) The 20 ounce jar is the best buy.
Ex 2a) A small bag of Skittles costs \$1.00 and Ex 2a) A bigger bag of Skittles costs \$4.00
contains about 50 skittles. What is cost per
and contains about 110 skittles. What is cost
unit?
per unit?
\$1.00/50 = \$0.02 per skittle
\$4.00/110 = \$0.036 per skittle
Ex 2c) The small bag of Skittles is the best buy.
Ex 3a) A box of Fruit Loops costs \$3.99 for 32 Ex 3b) A box of Captain Crunch costs \$2.99
ounces. What is cost per unit?
for 24 ounces. What is cost per unit?
\$3.99/32 = \$0.12 per ounce
\$2.99/24 = \$0.12 per ounce
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