Post on 01-Jan-2016
MULTI-STEP RATIO PROBLEMS
METHODS FOR SOLVING FRACTION OFF SALES PROBLEMS:
•Method 1: Draw a tape diagram.
•Method 2: Subtract the fraction of the price from the original price.
•Method 3: Find the fractional part of the price being paid by subtracting the fraction of the price from 1 whole.
EXAMPLE:
•A store advertises its end of the season sale with shoes at ¼ off the original price (called the discount rate).
•a) If the original price of the shoes is $40, and they are advertised as ¼ off, what is the sale price?
METHOD 1
•Tape Diagram
• $40
•¼ off the original price is: 10 + 10 +10 = $30
$10 $10 $10 $10
METHOD 2
•Subtract ¼ of the price from the original price.
•$40 – 1 (40) • 4•= 40 – 10•= $30
METHOD 3• Find the fractional part of the price being paid by subtracting ¼ of the price from 1 whole.
• (1 - 1 ) 40 • 4
•= 3 . 40• 4• •= $30