Working with Fractions
CBSE · Class 7 · Mathematics
Quick revision notes for Working with Fractions — CBSE Class 7 Mathematics. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
Multiplication of Fractions
- Multiplication of fractions follows the same principle as multiplying whole numbers - repeated addition
- When multiplying a whole number by a fraction, multiply the numerator by the whole number and keep the same denominator
- When multiplying two fractions, multiply numerators together and denominators together
Properties of Multiplication with Fractions
- When both numbers are greater than 1, the product is greater than both numbers
- When both numbers are between 0 and 1, the product is less than both numbers
- When one number is between 0 and 1 and another is greater than 1, the product lies between them
Division of Fractions
- Division can be converted into multiplication by using reciprocals
- To divide by a fraction, multiply by its reciprocal (flip the numerator and denominator)
- The reciprocal of a/b is b/a
Historical Context and Applications
- Fraction operations were developed in ancient India, with rules codified by Brahmagupta in 628 CE
- Bhāskara II (1150 CE) further clarified these methods in his book Līlāvatī
- Ancient Indian texts like Śulbasūtra (800 BCE) used fractions extensively
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What are the important topics in Working with Fractions for CBSE Class 7 Mathematics?
Working with Fractions covers several key topics that are frequently asked in CBSE 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 Working with Fractions — CBSE Class 7 Mathematics?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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