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Percent C H A P T E R 10 Lesson 10.1 Percent Write each item as a fraction, decimal, or percent. Fraction Decimal Percentage 1. 5 _ 10 2. 25 _ 100 3. 20 _ 100 4. 0.3 5. 0.45 6. 0.32 7. 75% 8. 60% 9. 15% 49 Extra Practice 5B © Marshall Cavendish International (Singapore) Private Limited. Name: Date:

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Page 1: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

PercentCHAPTER

10Lesson 10.1 PercentWrite each item as a fraction, decimal, or percent.

Fraction Decimal Percentage

1. 5_10

2. 25_100

3. 20_100

4. 0.3

5. 0.45

6. 0.32

7. 75%

8. 60%

9. 15%

49Extra Practice 5B

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Page 2: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

Solve. Show your work.

10. Duringamathquiz,studentshadtocomplete100questions.Jerrycompletedonly84questions.

a. WhatpercentofthequestionswerenotcompletedbyJerry?

b. WhatfractionofthequestionsdidJerrycomplete?

11. Inthegym,36_100ofthestudentsaregirls.Whatpercentofthestudents

inthegymareboys?

50

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Chapter 10 Lesson 10.1

Page 3: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

Lesson 10.2 Expressing Fractions as PercentsExpress each fraction as a percent.

1. 1_25 % 2. 1_45 %

3. 2_55 % 4. 3_85 %

5. 5_85 % 6. 11

_205 %

7. 16_255 % 8. 37_505 %

9. 72_3005 % 10. 184_4005 %

11. 270_3005 % 12. 440_5005 %

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51Extra Practice 5B

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Page 4: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

Solve. Show your work.

13. Therewere300participantsinanartcompetition.Oftheparticipants,240completedtheirdrawings.Whatpercentoftheparticipantsdidnotcompletetheirdrawings?

14. Thereare250blueandyellowbeadsinabox.Thereare60feweryellowbeadsthanbluebeadsinthebox.Whatpercentofthebeadsintheboxareyellow?

52

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Chapter 10 Lesson 10.2

Page 5: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

15. Afterspending$6.75onamealand$1.25ondrinks,Mariahad$12left.WhatpercentofhermoneydidMariaspend?

16. Therearetwosizesofredandbluemarblesinabox.Ofthebigmarblesin

thebox,45areredand3_4areblue.Thefractionofsmallmarblesthatarered

is2_5andthefractionofsmallmarblesthatareblueis3_5.Thereare24more

smallbluemarblesthansmallredmarbles.Whatpercentofthemarblesare

bigmarbles?

Name: Date:

53Extra Practice 5B

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Page 6: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

17. Glencollectsatotalof450stampsfromtheUnitedStates,GreatBritain,

andIndia.Inhiscollection,52%ofthestampsareU.S.stamps.Hehas3_5

asmanyIndianstampsasBritishstamps.

a. HowmanyIndianstampsdoesGlenhave?

b. WhatpercentofGlen’scollectionareBritishstamps?

18. Mr.Smithbaked144blueberrypies,somestrawberrypies,andsomeapple

pies.Thenumberofapplepiesis4_5ofthenumberofstrawberrypies.There

are24morestrawberrypiesthanapplepies.Whatpercentofthepiesare

blueberrypies?

54

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Chapter 10 Lesson 10.2

Page 7: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

Lesson 10.3 Percent of a NumberMultiply.

1. 25%of$360 2. 75%of24hours

3. 60%of160km 4. 80%of5,600people

5. 45%of8kg 6. 30%of2L370mL

Name: Date:

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Page 8: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

Solve. Show your work.

7. Ofthe480flowersinashop,30%arelilies,45%areorchids,andtherestareroses.Howmanyrosesarethereintheshop?

8. Ofthe350studentsinahall,20%aregirls.Then,50moregirlsenteredthehall.Now,whatpercentofstudentsinthehallaregirls?

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Chapter 10 Lesson 10.3

Page 9: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

Lesson 10.4 Real-World Problems: PercentSolve. Show your work.

1. Leondeposited$30,000inabankwhichpaid2%interestperyear.After1year,Leonwithdrewallhismoneyincludingtheinterest.HowmuchmoneydidLeonwithdrawinall?

2. Ataflowershop,4flowerscost$10.Mrs.Watsonusuallybuys12flowers.Duringasale,thereisa20%discountoneveryflower.HowmanyflowerscanMrs.Watsonbuyduringthesaleifshespendsthesameamountofmoneythatsheusuallydoes?

Name: Date:

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Page 10: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

3. Peter’sallowanceisthesameeverymonth.EachmonthPeterspends$114andsavestherest.Hesaves$432inayear.WhatpercentofhisallowancedoesPetersaveeverymonth?

4. Cherylused40%ofhermoneytobuyadressand1_5oftheremainderto

buyapairofshoes.Shethendonated$60tocharityandhad$132left.

HowmuchmoneydidCherylhaveatfirst?

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Chapter 10 Lesson 10.4

Page 11: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

Put on Your Thinking Cap!

Solve. Show your work.

1. Mrs.Liboughtsomecrackers.Shegave30%ofthecrackerstoherneighborandate50%oftheremainingcrackers.Mrs.Lihad42crackersleft.HowmanycrackersdidMrs.Libuy?

2. Intheeco-gardenofaschool,thenumberofaquaticanimalsis80%ofthenumberofaquaticplants.Thereare162aquaticplantsandanimalsinall.Howmanyaquaticanimalsareintheeco-garden?

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Page 12: C H A PTE R 10 Percent - Orange Board of Education...Chapter 10 Lesson 10.2 15. After spending $6.75 on a meal and $1.25 on drinks, Maria had $12 left. What percent of her money did

3. Ofthe150goldfishthatJoannabought,60%werefemalesandtherestweremales.Whensomefemalegoldfishdied,thepercentoffemalegoldfishbecame52%.

a. Howmanymalegoldfishwerethere?

b. Howmanyfemalegoldfishdied?

4. Ofthe280muffinsthatMr.Parkerbaked,40%werecornmuffins.HowmanymorecornmuffinsmustMr.Parkerbakesothat60%ofthemuffinsarecornmuffins?

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Chapter 10 Put on Your Thinking Cap!


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