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Intro to Percents



Summary
The content provides a comprehensive guide on understanding and converting percents, decimals, and fractions, essential for GRE exam preparation.
  • A percent is fundamentally a fraction, with the term originating from the Latin 'per centum', meaning per 100.
  • Converting between percents and decimals involves moving the decimal point: two places to the left for percents to decimals, and two places to the right for decimals to percents.
  • To change percents to fractions, place the percent over 100 and simplify; changing fractions to percents requires converting the fraction to a decimal first.
  • Approximating percents from fractions or division is crucial for the GRE, with strategies provided for making quick and effective estimations.
  • Understanding these conversions and approximations is vital for tackling a wide range of GRE quantitative questions.
Chapters
00:05
Understanding Percents
00:00
Converting Percents to Decimals and Vice Versa
02:04
Converting Percents to Fractions and Vice Versa
04:02
Approximating Percents from Fractions