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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 prep.
- 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 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 may require simplification or approximation.
- For exact conversions from fractions to decimals (and thus to percents), familiarity with fraction-to-decimal conversions is crucial.
- Approximating percents from fractions involves strategic multiplication to simplify the fraction, aiding in easier conversion to a percent.
Chapters
00:05
Introduction to Percents
01:19
Converting Percents to Decimals and Vice Versa
02:04
Converting Percents to Fractions and Vice Versa
04:02
Approximating Percents from Fractions
