Student Edition - Mathematics in Context - Britannica

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AProduce Pricing1.92Paul calculated the price for 0.8 kg of Red Delicious apples at SaveSupermarket. He used his calculator and made these entries.0.8 2.40 His calculator displayed 1.92 as the total.Mary disagrees.That can’t be right!When you multiply, isn’tthe answer always largerthan the two numbers youstarted with?15. Reflect Is Mary right, or is Paul’s calculatorcorrect? Defend your position.16. Describe two ways to use a calculatorto determine the cost of 3 4 kg of walnutspriced at $7.98 per kilogram.Broken CalculatorMs. Vander of Save Supermarketlikes the calculating scale thatcustomers use at Veggies-R-Us.She decides to keep a calculatornext to her dial scale. Customerscan calculate the exact cost of theirproduce before they check out.Unfortunately, the calculatorhas been used so much that thedecimal point key no longer works.6 More or Less
Produce PricingASean weighs 2.63 kg of strawberries priced at $4.32 per kilogram.He thinks he can use the calculator in spite of the defectivedecimal point key.17. a. Make a low estimate and a high estimate ofthe cost of Sean’s strawberries.b. Describe how Sean will use the calculator tofind the exact cost of his strawberries.c. Find the cost of Sean’s strawberries.18. Use your answer to part c of problem 17 to determinethe prices of these amounts:a. 0.263 kg of strawberriesb. 26.3 kg of strawberries19. The calculator is still broken. Use the informationbelow to find the actual cost of each strawberrypurchase. Describe how you found each answer.4.32per kgCustomerSallyDevinNiyaWeight3.98 kg1.72 kg0.39 kgCalculator Display1719367430416848Section A: Produce Pricing 7
Page 1 and 2: Moreor LessNumber
Page 3 and 4: The Mathematics in Context Developm
Page 6 and 7: Dear Student,This unit is about the
Page 8 and 9: AProduce PricingCarol is a customer
Page 10 and 11: AProduce PricingWhen Carol is finis
Page 14 and 15: AProduce PricingThere are many ways
Page 16 and 17: AProduce PricingPaul has $7 to spen
Page 18 and 19: BDiscountsThe second survey questio
Page 20 and 21: BDiscounts9. Choose three of your m
Page 22 and 23: BDiscounts• Results of a survey c
Page 24 and 25: CMany ChangesDesign a SignSave Supe
Page 26 and 27: CMany ChangesProfit FractionsThe ow
Page 28 and 29: CMany ChangesMs. Jao decided to use
Page 30 and 31: CMany ChangesTo calculate the sale
Page 32 and 33: DMore or LessEnlarge or ReduceMarit
Page 34 and 35: DMore or LessThe group wants to mak
Page 36 and 37: DMore or Less• A third method use
Page 38 and 39: DMore or LessIn this section, you s
Page 40 and 41: DMore or LessThe copier they are us
Page 42 and 43: Additional PracticeSectionBDiscount
Page 44 and 45: Additional PracticeDuring his prese
Page 46 and 47: Answers to Check Your WorkThe price
Page 48 and 49: Answers to Check Your Work• Calcu
Page 50 and 51: Answers to Check Your Work5. Answer
Page 52 and 53: Answers to Check Your Work• Using

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