Performance Task Objectives
· Multiply whole numbers and fractions
Sunshine State Standards
· MA.A.1.2.2
· MA.A.3.2.2
· MA.A.3.2.3
Materials
· Student recording sheet
· Counting chips (optional)
· Calculator (optional)
· Paper and pencil
Student arrangement
· In dividual or small group
Task
Present the problem on the student Recording Sheet to your students.
Performance Criteria
· Does the student understand what “finding a fraction of a number ” means?
· Can the student de termine prices after each 10day interval?
· Does the student use an appropriate strategy for determining all possible
combinations of items to be purchased after 10 days?
· Can the student explain why the de signated purchases could or could not
be made?
Solve this problem :
A warehouse sells clothing at a fraction of its original cost. The table
be low shows the fraction off the original price for clothing that remains in
the warehouse after 10 days, 20 days, and 30 days.
WAREHOUSE PRICES 
Item 
Price 
After 10 Days 
After 20 Days 
After 30 Days 
Jacket 
$120 
1/4 off 
1/3 off 
1/2 off 
Shoes 
$40 
1/5 off 
2/5 off 
3/5 off 
Shirt 
$12 
1/4 off 
1/3 off 
2/3 off 
1. Find the price of the items after each 10day period to
complete the
chart below . Show how you arrived at each answer.
WAREHOUSE PRICES 
Item 
Price 
After 10 Days 
After 20 Days 
After 30 Days 
Jacket 
$120 
$90 


Shoes 
$40 



Shirt 
$12 


$4.00 
Suppose you have $100.00 to spend.
2. Within the range of $90.00 to $100.00, what are all
possible
combinations of items you could buy after 10 days?
3. Would you have enough m oney to buy 2 jackets after 20
days? Why
or why not?
4. Could you buy all 3 items if you waited until after 30
days?
Remember, you only have $100.00 to spend. Why or why not?