Post on 10-May-2020
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Ratio and proportion problems
1 Whitneybuys6cansoflemonadefor£3
a) Howmuchdo12canscost?
b) Howmuchdo3canscost?
c) Howmuchdo15canscost?
2 Theratioofredtogreengrapesinabowlis3:1
a) Explainwhatthismeans.
b) Thereare12moreredgrapesthangreengrapes.
Whatisthetotalnumberofgrapesinthebowl?
3 Amirismakingsomechocolatechipbiscuits.
Hehasthislistofingredientstomake6biscuits.
a) HowmuchofeachingredientdoesAmirneedtomake
2biscuits?
butter g plainflour g
sugar g chocolatechips g
b) HowmuchofeachingredientdoesAmirneedtomake
10biscuits?
butter g plainflour g
sugar g chocolatechips g
c) Amirhas240gofchocolatechips.
Whatisthemaximumnumberofbiscuitshecanmake?
©WhiteRoseMaths2019
£3
Chocolate chip biscuits (makes6)
120gbutter
72gsugar
180gplainflour
60gchocolatechips
4 Dexterhassome20pand50pcoinsinajar.
Foreverythree20pcoinshehasone50pcoin.
Thereare12coinsinthejarintotal.
Howmuchmoneyisinthejar?
5 Adrinkismadeusing3partsorangejuiceto2partslemonade.
Esthermakes1.2litresofthisdrink.
Howmuchorangejuicedoessheneed?
ml
6 Twoshopssellthesamecerealbutindifferent-sizedboxes.
Shop A
500gofcornflakes
£2.10
Shop B
750gofcornflakes
£3.30
Whichshopisbettervalueformoney?Shop
Explainwhy.
©WhiteRoseMaths2019
7 Doradrawstwosimilarrectangles.
Thelengthandwidthofbothrectanglesareevennumbers.
Whatisthelargestpossibleareaforthesmallrectangle?
cm2
8 Aishahastwoboxesofsweets.
• Inthefirstbox,theratioofredsweetstogreensweetsis3:1
• Inthesecondbox,forevery2orangesweetsthereare
3yellowsweets.
• Thereisthesamenumberofsweetsineachbox.
• Thereare12yellowsweetsinthesecondbox.
Howmanysweetsareinthefirstbox?
My larger rectangle is 4 times the size of the
smaller one.
The perimeter of the larger rectangle is 48 cm.