Mathematics Grade 7 15 min

Add, subtract, multiply, and divide money amounts: word problems

Add, subtract, multiply, and divide money amounts: word problems

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1

Introduction & Learning Objectives

Learning Objectives Identify the correct operation (addition, subtraction, multiplication, or division) needed to solve a money word problem. Accurately calculate the total cost of multiple items using addition or multiplication. Determine the correct change received from a purchase using subtraction. Calculate the cost per item or share a total cost equally using division. Solve multi-step word problems involving various money operations. Apply problem-solving strategies to real-world financial scenarios. Correctly format money answers with dollar signs and two decimal places. Ever wondered how much money you'd save if you bought items on sale, or how to split a pizza bill fairly with friends? 🍕💰 In this lesson, you'll learn how to use addition, subtraction,...
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Key Concepts & Vocabulary

TermDefinitionExample Total CostThe sum of the prices of all items purchased or services rendered.If a shirt costs $15 and pants cost $20, the total cost is $35. ChangeThe amount of money returned to a customer after they pay more than the total cost of their purchase.If you pay $20 for an item that costs $12.50, your change is $7.50. Unit PriceThe cost of a single item or a single unit of a product.If a pack of 6 sodas costs $3.00, the unit price is $0.50 per soda. BudgetA plan for how to spend and save money over a period of time.Setting a budget of $50 for entertainment for the month means you can't spend more than that. DepositMoney that is added to an account or given as a partial payment upfront.Putting $25 into your savings account is a deposit. WithdrawalMoney that is taken o...
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Core Formulas

Rule for Finding Total Cost (Addition) To find the total cost of different items, add their individual prices together: \( \text{Total Cost} = \text{Item}_1 + \text{Item}_2 + \dots + \text{Item}_n \) Use this rule when you are buying several different items and need to know the combined price. Rule for Calculating Change Received (Subtraction) To find the change you should receive, subtract the total cost of the purchase from the amount of money you paid: \( \text{Change} = \text{Amount Paid} - \text{Total Cost} \) Apply this rule when you've paid with a larger bill and need to know how much money you get back. Rule for Cost of Multiple Identical Items (Multiplication) To find the total cost of multiple identical items, multiply the number of items by the price of...

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Sample Practice Questions

Easy
Leo buys a sandwich for $6.50 and a drink for $2.25. According to the 'Rule for Finding Total Cost', what is the total cost of his lunch?
A.$4.25
B.$8.25
C.$8.75
D.$6.75
Easy
Aisha buys a book for $12.40 and pays with a $20.00 bill. Using the 'Rule for Calculating Change Received', how much change should she get back?
A.$7.60
B.$8.60
C.$32.40
D.$7.40
Easy
A single movie ticket costs $9.50. What is the total cost for a group of 4 friends, based on the 'Rule for Cost of Multiple Identical Items'?
A.$36.00
B.$13.50
C.$38.50
D.$38.00

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