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15Buying Items on Sale Unit
Objective: Learn how to apply percents to situations in real life Which store should Thomas go to in
order to spend less money?
Thomas wants to spend less money to buy the shirt. Have students fill in the blanks to find the
Which store should he go to? price of the shirt at each store.
Thomas can spend less money if he buys the shirt at store B. Merchants want to make their wares
attractive to shoppers so they will buy items.
Find the sale price of the shirt in each store. Fill in the blanks. Have students talk about the different
methods merchants can offer items for sale.
Store A Some of these methods are:
a. Straight percentage off
discount: 0.5 b. Buy one get one free
100 50% = 100 c. Buy one, get the second for 50% off
= $ 50 Have students discuss what each of these
methods means and when is it best to take
sale price: advantage of each method.
100 50 = $ 50
Store B
discount: 0.6
120 60% = 120
= $ 72
sale price:
120 72 = $ 48
Thomas can spend less money if he buys the shirt at store B .
15. Buying Items on Sale 131
Percent is a concept that is based on the Latin words “per centum.” “Centum” means 100 in Latin and “per”
is the equivalent of “by,” so the literal meaning of percent is “by 100.” Per centum is not a word used in
everyday language, and over the years it has been abbreviated to percent, but it still refers to fractions
where 100 is the common denominator.
6A Unit 15 217
Objective: Learn how to apply percents to situations in real life Which store should Thomas go to in
order to spend less money?
Thomas wants to spend less money to buy the shirt. Have students fill in the blanks to find the
Which store should he go to? price of the shirt at each store.
Thomas can spend less money if he buys the shirt at store B. Merchants want to make their wares
attractive to shoppers so they will buy items.
Find the sale price of the shirt in each store. Fill in the blanks. Have students talk about the different
methods merchants can offer items for sale.
Store A Some of these methods are:
a. Straight percentage off
discount: 0.5 b. Buy one get one free
100 50% = 100 c. Buy one, get the second for 50% off
= $ 50 Have students discuss what each of these
methods means and when is it best to take
sale price: advantage of each method.
100 50 = $ 50
Store B
discount: 0.6
120 60% = 120
= $ 72
sale price:
120 72 = $ 48
Thomas can spend less money if he buys the shirt at store B .
15. Buying Items on Sale 131
Percent is a concept that is based on the Latin words “per centum.” “Centum” means 100 in Latin and “per”
is the equivalent of “by,” so the literal meaning of percent is “by 100.” Per centum is not a word used in
everyday language, and over the years it has been abbreviated to percent, but it still refers to fractions
where 100 is the common denominator.
6A Unit 15 217
