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Factors & Prime Factorisation (Revision)
Last updated at July 29, 2025 by Teachoo
Class 8 (Ganita Prakash & Old NCERT)
Chapter 1 Class 8 - A Square and a Cube (Ganita Prakash)
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Introduction
- Square Numbers
- Perfect Squares - and its Properties
- Perfect Squares - and its Patterns
- Square Root
- Smallest number multiply or divide to get perfect square
- Estimating Square Root
- Figure it out - Page 10, 11
- Cubic Numbers
- Perfect Cubes - and its Properties
- Perfect Cubes - and its Patterns
- Cube Root
- Smallest number multiply or divide to get perfect cube
- A pinch of History
- Figure it out - Page 16, 17
Transcript
Factors & Prime Factorization (Revision) Let’s revise how to find Factors, and how to do Prime Factorization Factors of 30 1 × 30 = 30 2 × 15 = 30 3 × 10 = 30 4 × 5 × 6 = 30 6 × 5 = 30 We stop here as 5 & 6 have occurred earlier So, factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30 Prime Factorization of 30 Thus, Factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30 Prime Factors of 30 are 2, 3, 5 We will majorly use prime factorization to find square numbers, and cube numbers
