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Percent and Percentage

ICSE · Class 7 · Mathematics

Quick revision notes for Percent and Percentage — ICSE Class 7 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

60 questions28 flashcards5 concepts

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Key Topics to Revise

1

1. Basic idea of percent

  • CENT means hundred.
  • Percent means per hundred or out of hundred.
  • Percent notation is written using the % sign.
2

2. Converting between fraction, decimal, ratio and percent

  • To change a fraction or decimal into percent, multiply by 100 and write %.
  • To change a percent into a fraction or decimal, divide by 100 and remove %.
  • A ratio can also be written as percent after converting it into a fraction.
3

3. One quantity as a percent of another

  • First make the units the same if needed.
  • Then form the fraction with the quantity being compared as the numerator and the base quantity as the denominator.
  • Multiply by 100 and write %.
4

4. Percentage of a quantity

  • p% of N means p/100 × N.
  • This is used to find a part of a quantity.
  • The whole quantity, whole work, etc. are always taken as 100%.

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Full Notes

Key Concepts

The word cent means hundredMultiply the value by 100Divide the percent by 100First make sure both quantitiesUse p% of N = (p/100)

Frequently Asked Questions

What are the important topics in Percent and Percentage for ICSE Class 7 Mathematics?
Percent and Percentage covers several key topics that are frequently asked in ICSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Percent and Percentage — ICSE Class 7 Mathematics?
Understand the core concepts first, then work through the 60 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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