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Intro to Percents

The content provides a comprehensive guide on understanding and converting percents, decimals, and fractions, essential for GRE exam preparation.
  • Percents are fundamentally fractions or decimals divided by 100, originating from the Latin term 'per centum'.
  • Converting between percents and decimals involves moving the decimal point two places to the left or right, depending on the direction of conversion.
  • Changing from percents to fractions is straightforward by placing the percent over 100, while converting fractions to percents requires decimal conversion first.
  • Approximating percents from fractions or division is crucial for the GRE, with strategies provided for making quick and accurate estimations.
  • The content emphasizes the importance of understanding multiples of ten and fraction to decimal conversions for mastering percent-related problems.
Introduction to Percents
Converting Percents to Decimals and Vice Versa
Converting Percents to Fractions and Vice Versa
Approximating Percents from Fractions