Practice and Revision - Percent (Percentage)
Let us practise and revise what we learned about percent (percentage). A percentage expresses a number as a part of 100, commonly used for d
Core concept
'Percent' means 'per hundred', so 40% means 40 out of 100, which can also be written as the fraction 40/100.
How it works
We convert fractions to percentages by adjusting the denominator to 100, and percentages to fractions by dividing by 100.
Why it matters
Percentages are widely used for calculating discounts (20% off), interest rates, and exam scores (75% marks).
Key detail
Understanding percentages helps us interpret real-world information, like sale discounts or statistics in the news.
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Quick notes
• 'Percent' means 'per hundred'.
• 40% means 40 out of 100.
• 40% = 40/100 as a fraction.
• We convert fractions to percentages using 100.
• Percentages calculate discounts and interest.
• 20% off is a common discount example.
• 75% marks means 75 out of 100.
• Percentages help interpret real information.