Mathematics Grade 7 15 min

Price lists

Price lists

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1

Introduction & Learning Objectives

Learning Objectives Identify and interpret information presented in various price lists. Calculate the total cost of multiple items using a given price list. Determine the unit price of an item to compare different purchasing options. Apply discounts and sales tax to calculate the final price of goods. Solve multi-step word problems involving price lists and budgeting scenarios. Compare prices from different vendors or packages to make informed consumer decisions. Have you ever gone shopping and wondered how much everything will cost? 🛒 Understanding price lists helps you become a super smart shopper! In this lesson, you'll learn how to read and use price lists to calculate costs, compare deals, and make wise spending choices. These skills are essential for managing y...
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Key Concepts & Vocabulary

TermDefinitionExample Price ListA document or display showing the cost of various goods or services.A menu at a restaurant showing 'Pizza: $12.00', 'Soda: $2.50'. ItemA specific product or service listed on a price list.In a stationery store price list, 'pencil' or 'notebook' are items. QuantityThe number of a specific item being purchased.If you buy 3 apples, the quantity is 3. Unit PriceThe cost of a single unit of an item (e.g., per item, per kilogram, per liter).If a 5-pack of gum costs $2.50, the unit price is $0.50 per stick. Total CostThe sum of the costs of all items purchased, often before tax or discounts.If you buy a $5 book and a $3 pen, the total cost is $8. DiscountA reduction in the original price of an item or service.A sign says &#0...
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Core Formulas

Calculating Total Cost for Multiple Units `Total Cost = Quantity × Unit Price` Use this rule to find out how much you'll pay when buying more than one of the same item, given its price per unit. Calculating Unit Price `Unit Price = Total Cost / Quantity` Use this rule to find the cost of one single item when you know the total cost for a group of identical items. This is useful for comparing deals. Calculating Discount Amount `Discount Amount = Original Price × (Discount Rate / 100)` Use this rule to find out how much money you save when an item is on sale. The discount rate is usually given as a percentage. Calculating Sales Tax Amount `Sales Tax Amount = Subtotal × (Sales Tax Rate / 100)` Use this rule to find the extra amount charged by the government...

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Sample Practice Questions

Challenging
You want to buy a bike that costs $220. The store offers two deals. Deal A: A $30 instant rebate. Deal B: A 15% discount. Which deal saves you more money, and by how much?
A.Deal A saves $3 more than Deal B.
B.Deal B saves $3 more than Deal A.
C.Deal A saves $15 more than Deal B.
D.Deal B saves $33 more than Deal A.
Challenging
You need to buy 2 notebooks and 10 pencils. Store A sells notebooks for $2.00 and pencils for $0.50, and offers a 10% coupon on the entire purchase. Store B sells notebooks for $2.25 and pencils for $0.40. Which store is cheaper and by how much?
A.Store A is cheaper by $0.40.
B.Store B is cheaper by $0.40.
C.Both stores cost the same.
D.Store A is cheaper by $0.90.
Challenging
You buy two books at $14 each. You have a coupon for 15% off your total purchase. A 6% sales tax is applied to the discounted price. If you pay with a $50 bill, how much change will you receive?
A.$24.80
B.$25.20
C.$24.00
D.$23.00

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