Introducing the ratio symbol 3 - White Rose Maths › wp-content › uploads › ... · Introducing...
Transcript of Introducing the ratio symbol 3 - White Rose Maths › wp-content › uploads › ... · Introducing...
Introducing the ratio symbol
1 Theratiosshowshadedpartstonon-shadedparts.
Matchtheratios,statementsandbarmodels.
2:3
fivetotwo
5:2
threetotwo
2:5
twotothree
3:2
twotofive
2
Whoiscorrect?
Explainyouranswer.
3 Danihassomecounters,cubesandmarbles.
Completethesentences.
Theratioofcounterstomarblesis :
Theratioofmarblestocubesis :
Theratioofcubestocountersis :
Theratioofcounterstocubesis :
Theratioofcounterstocubestomarblesis : :
4 Bretthasdrawnsometrianglesandsquares.
Theratiooftrianglestosquaresis1:3
a) Aretheremoretrianglesormoresquares?
Explainhowyouknow.
b) Bretthasdrawnmorethan10shapes.
DrawwhatBrettmighthavedrawn.
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The ratio of purple to yellow is 5 : 4
It is 4 : 5
Mo Alex
5 Herearesomerulersandsomepencils.
a) Whatistheratioofpencilstorulers? :
b) Herearesomemorerulersandpencils.
Whoiscorrect?
Explainyouranswer.
©WhiteRoseMaths2019
6 Theratioofhorsestochickensinafieldis2:5
Herearethehorses.Drawthechickens.
7 Shadesquaressothattheratioofshadedtonon-shadedsquares
is1:4
a) b) c)
8 Aboxcontainsdark,whiteandmilkchocolates.
38
oftheboxaredarkchocolates.
12
oftheboxaremilkchocolates.
Therestarewhitechocolates.
Whatdoeseachratiorepresent?
a) 1:3
b) 4:1
c) 3:5
The ratio of pencils to rulers is the
same as in part a).
Ron is wrong because there are more pencils
and more rulers.
Ron
Dora