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 or a number 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 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; for fractions to percents, convert the fraction to a decimal, then move the decimal point two places to the right.
- Understanding the conversion between fractions and decimals is crucial for changing fractions to percents accurately.
- Approximating percents from fractions or division is a valuable skill, involving strategic multiplication to get a close estimate.
Chapters
00:05
Understanding Percents
00:00
Converting Percents and Decimals
02:04
Converting Percents and Fractions
04:02
Approximating Percents from Fractions
