Unit Prices & Better Deals

Unit Prices & Better Deals

by Ginger Pate

​On your whiteboard, draw this table: (If you are at home sick, do this on notebook paper.)

​An 8-meter piece of wire costs $6.80. What is the unit price?

​

​Fill in the following chart for the above problem.

​Do NOT solve the problem yet.

​Hold up your whiteboard.

Your table should look like this:

Fill in the Blank

NOW find the unit price.  You may use a calculator.

Type in your answer WITH a $-sign: 

example $1.16, $0.94, $22.95

​Draw this table again:

Fill in the Blank

Use the table to answer the following question: 

A 9-meter roll of string costs $1.89. What is the unit price?

Write your answer with a $-sign.

Examples:  $0.23, $2.34, $2.07

​On your whiteboard, draw two tables this time:

​Fill in the two tables with the above information.

Multiple Choice

Use the two tables you drew on your whiteboard to answer the question.

• 5-ounce jar because the unit price is $0.69.

• 7-ounce jar because the unit price is $0.66.

• 5-ounce jar because the unit price is $0.96.

• 7-ounce jar because the unit price was $.65.

Multiple Choice

Please draw out two tables on your whiteboard.  Fill in the information and then find the answer.

• The 4-kilogram bag of green peppers because the unit price is $0.73.

• The 8-kilogram bag of green peppers because the unit price is $0.76.

• The 4-kilogram bag because the unit price is $0.43

• The 8-kilogram bag because the unit price is $0.64.

​DO NOT COPY TABLE THIS TIME!

​On your whiteboard, please write the number that you would type in FIRST on a calculator to solve for the unit price.

​HOLD UP YOUR BOARD NOW!

​15 / 5 = 3

​

​Please write this out on your whiteboard in the long-division "house" way.

Multiple Choice

Which number do you type in the calculator LAST - as in after the division button?

• 15

• 5

• 3

Multiple Choice

Look at the question shown.  Please pick which number you would put into the calculator first to solve this problem. This is also the number that goes under the "house" in a written division problem.

• 3

• $1.08

Multiple Choice

In this question, what number is the divisor?  HINT: This is the number on the outside of the house.  The last number we push on the calculator in order to find the answer to this question.

• 8

• $16.16

• 25

Multiple Choice

Use your whiteboard to draw a table. Then use a calculator to solve.

• 5 pack

• 9 pack

• They are the same unit price.