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Samenvatting GMAT - Aantekeningen Fractions, Decimals & Percentages
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Aantekeningen GMAT - Fractions, Decimals & Percentages (VU GMAT Preparation Course)
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Fractions, Decimals and Percentsdanique levering
,digits and decimals | cijfers en decimalen
percents | procenten
ratios | ratios
, digits and decimals | cijfers en decimalen
Cijfers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Decimalen Wetenschappelijke notatie
1.2 3 4.5 6 7,8 9 1.000 100 10 1 1/10 1/100 1/1000
millions 103 102 101 100 10-1 10-2 10-3
hundred thousands tens hundredths
ten thousands hundreds units/ones tenths
thousands decimal point
Decimalen Decimalen en Wortels
Vermenigvuldigen en Delen Je kunt wortels herformuleren als een macht van 10.
Als je getallen vermenigvuldigt met decimalen,
3√0,000000008 = ?
kun je de decimaalpunt er eerst uithalen en daarna
0,000000008 = 8 x 10-9
terugzetten.
Dus 3√8 x 10-9 = (8 x 10-9)1/3 =
0,02 x 1,74 81/3 x (10-9)1/3 =
2 x 174 = 348 2 x 10-3 = 0,002
zet de vier decimalen terug
0,0348
Bij delen kun je de decimalen bij beide getallen
opschuiven, zodat het hetzelfde resultaat krijgt,
maar gemakkelijker kunt rekenen.
10,,4
105, = 26,3
0,,07
.000 = 0,00002
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