ChapterChapter ExtraPracticeandHomeworkFourOperationsofDecimals
Activity9 Real-WorldProblems:DecimalsSolve.Showyourwork.Usethebarmodeltohelpyou.
1 Ryanspent$42.65atasupermarket.Hespent$24.50atabookshop. HowmuchdidRyanspendaltogether?
$42.65 $24.50
?
$ $ =$
Ryanspent$ altogether.
Youcanusethefour-stepproblem-solvingmodeltohelpyou.
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Solve.Showyourwork.Drawabarmodeltohelpyou.
2 Caleb’s mass was 34.2 kilograms. He was 15.85 kilograms lighter than his sister. hat was his sister’s mass
3 Brady’s height was 1.34 meters. He was 0.45 meter taller than his sister. hat was Brady’s sister’s height
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4 Rachelwantedtobuyacraftsetthatcost$58.45,butshewasshortof$12.90.HowmuchmoneydidRachelhave?
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5 Thethicknessofapieceofwoodwas2.45centimeters.Lucasstacked9 piecesofwood,oneontopoftheother.Findthetotalheightofthestackof9piecesofwood.
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6 Onefishtankcontained24.58litersofwater.Howmuchwaterdid4ofthesefishtankscontain?
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7 Miguelbought15.4metersofclothtosew7identicalcushioncovers. HowmuchclothdidMigueluseforeachcushioncover?
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8 Ms.Ramirezbought4similarblouses.Shespentatotalof$67.Howmuchdideachblousecost?
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Solve.Showyourwork.Usethebarmodeltohelpyou.
9 Alibought3similarpacketsofnutsfor$4.65.a Howmuchdideachpacketofnutscost?
$4.65
?
$ =$
Eachpacketofnutscost$ .
b Howmuchdid8ofthesepacketsofnutscost?
$
?
$ =$
8ofthesepacketsofnutscost$ .
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Solve.Showyourwork.Drawabarmodeltohelpyou.
10 Davidmadesomefruitpunchbymixingmangojuiceandpineapplejuice.Heused2.05litersofmangojuiceandtwiceasmuchpineapplejuiceasmangojuicetomakethefruitpunch.a HowmuchpineapplejuicedidDaviduse?
b HowmuchfruitpunchdidDavidmake?
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11 TinAcontains4.08litersofbluepaint.TinBcontains5.61litersofwhitepaint.Nathanmixedthepaintfrombothtins.Hethenused1.25litersofthepaint.HowmuchpaintdidNathanhaveleft?
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12 4similarstaplerscost$25.Astaplercost5timesasmuchasaboxofpaperclips.Findthecostofaboxofpaperclips.
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13 Alanused4.08metersofclothtosewadress.Heused1.2meterslessclothtosewaskirt.HowmuchclothdidAlanneedtosew5oftheseskirts?
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14 Briannasaved$9.20aweekfor4weeks.Sheneededtosaveanother$15.60tobuyacomputergame.Whatwasthepriceofthecomputergame?
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15 Thetotalmassof2similarclaypotsand2similarmetalpotsis13.2 kilograms.Themassofaclaypotis3timesthemassofametalpot.Whatisthemassofaclaypot?
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16 Averyspentatotalof$11.60on5similarpensandaruler. Arulercost$1.30lessthanapen.Howmuchdideachpencost?
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17 The total distance from Connor’s house to his school was 9.18 kilometers. Hetraveledbybusforpartofthejourneyandwalkedtherestoftheway.
Thedistancehewalkedwas7.95kilometersshorterthanthedistancehetraveledbybus.HowfardidConnorwalk?
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