Mathematics
Grade 3
15 min
Price lists
Price lists
Tutorial Preview
1
Introduction & Learning Objectives
Learning Objectives
Read a price list to find the cost of a specific item.
Calculate the total cost of multiple identical items using multiplication.
Calculate the total cost of several different items using addition.
Determine the correct amount of change to receive after a purchase.
Compare the prices of two items to find the difference in cost.
Solve one- and two-step word problems involving a price list.
Ever been to a school book fair or an ice cream shop? 🍦 How do you know how much your favorite book or scoop of chocolate chip cookie dough costs?
Today, we are going to become shopping experts by learning how to read and use price lists! A price list is a super helpful tool that tells us how much things cost. Knowing how to use one helps us make sure we have enough mo...
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Key Concepts & Vocabulary
TermDefinitionExample
Price ListA list that shows different items and how much each one costs. It helps you know the price before you buy.A menu at a pizza place that says: Cheese Slice - $2.00, Pepperoni Slice - $2.50, Soda - $1.00.
ItemA single product or thing that is for sale.On a school supply list, a pencil is an item, and an eraser is another item.
PriceThe amount of money you have to pay to buy one item.If a notebook costs $3.00, its price is $3.00.
QuantityThe number of items you are buying.If you buy 4 pencils, the quantity is 4.
Total CostThe full amount you have to pay for all your items added together.If you buy a juice box for $1.00 and a banana for $0.50, the total cost is $1.50.
ChangeThe money you get back when you pay with more money than the total cost.If your total cos...
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Core Formulas
Total Cost of Multiple Same Items
Total Cost = Price of one item × Quantity
Use this rule when you are buying more than one of the exact same item. For example, buying 3 identical candy bars.
Total Cost of Different Items
Total Cost = Price of Item 1 + Price of Item 2 + ...
Use this rule when you are buying different items. You must add the price of each individual item together.
Calculating Change
Change = Money Paid - Total Cost
Use this rule to figure out how much money the cashier should give you back. You subtract the total cost of your items from the amount of money you gave the cashier.
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Challenging
Use the price list below. David buys one of every item on the price list. What is his total cost?
**Fun Fair Price List**
- Ferris Wheel Ticket: $4.00
- Popcorn: $2.50
- Cotton Candy: $3.00
- Pretzel: $2.00
- Lemonade: $1.50
A.$11.00
B.$12.50
C.$13.50
D.$13.00
Challenging
Use the price list below. Maria buys a Ferris Wheel Ticket and two orders of Popcorn. She pays with a $20.00 bill. What is her change?
**Fun Fair Price List**
- Ferris Wheel Ticket: $4.00
- Popcorn: $2.50
- Cotton Candy: $3.00
- Pretzel: $2.00
- Lemonade: $1.50
A.$9.00
B.$11.00
C.$13.50
D.$15.00
Challenging
Use the price list below. You have $10.00. You buy one Ferris Wheel Ticket. How many Pretzels can you buy with the money you have left?
**Fun Fair Price List**
- Ferris Wheel Ticket: $4.00
- Popcorn: $2.50
- Cotton Candy: $3.00
- Pretzel: $2.00
- Lemonade: $1.50
A.1 Pretzel
B.2 Pretzels
C.3 Pretzels
D.4 Pretzels
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