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Samenvatting Oefentoets voor examen Rekenen Domein 4 Verhoudingen 3F

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Oefentoets voor examen Rekenen Domein 4 Verhoudingen 3F Het document bestaat uit de vragen en vervolgens uitleg en antwoorden. Dit helpt je bij het voorbereiden op je examen.

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Oefentoets Domein 4 Verhoudingen
Vraag 1




Pak 2 getallen (maar niet de eerste 2) en reken dan het verschil uit.
125 gram = €5,75 en 175 gram = €7,75. Het verschil tussen deze twee is 50 gram.
Het verschil in geld is €2,00. Hieruit kunnen wij concluderen dat 50 gram €2,00 kost.

Als we dan gaan kijken naar wat de vaste prijs is, kijken we naar het 1 e getal. In de
tabel zien we dat 25 gram €1,75 euro is. Wij hebben net uitgerekend dat 50 gram
€2,00 is, dus 25 gram is dan €1,00. We zien dan in de tabel dat het €1,75 euro is dus
dat betekent dat er €0,75 euro vaste kosten zijn.

We krijgen dus de formule van: vaste kosten + prijs per 50 gram x aantal gram : 50
Dus als we die invullen krijgen we: €0,75 + €2,00 x 225 : 50 = €9,75

Antwoord: €9,75

,Vraag 2




We vullen hier gewoon de formule in: 44,5 + 0,376 x 185 (lengte vader) + 0,441 x
165 (lengte moeder) = 186,825cm

Afronden op hele centimeters

Antwoord: 187cm

, Vraag 3




Dit moet je gewoon aflezen in de grafiek. Het begint te dalen vanaf 1-1-2013

Antwoord: 2013

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Oefentoets voor examen rekenen domein 4 verhoudingen 3f
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