Class 7 Maths · Part 2 Chapter 3 · CBSE / NCERT
Finding Common Ground
HCF and LCM. You’ll learn to find them from prime factors and by dividing together, see why HCF × LCM equals the product, and choose which one a word problem needs.
10 short lessons · about 40 minutes in all
What you’ll learn
- 1Common factors and the biggest one4 min
- 2Breaking a number into primes4 min
- 3Making factors from primes4 min
- 4Finding the HCF from primes4 min
- 5Common multiples and the smallest one4 min
- 6Finding the LCM from primes4 min
- 7Rules that hold for special pairs4 min
- 8Dividing together for HCF and LCM4 min
- 9HCF times LCM equals the product4 min
- 10Choosing HCF or LCM in a story4 min
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Common factors and the biggest one · about 4 minutes
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More Class 7 Maths
The other 14 chapters.
PART 1 · CH 1Large Numbers Around Us12 lessonsPART 1 · CH 2Arithmetic Expressions10 lessonsPART 1 · CH 3A Peek Beyond the Point12 lessonsPART 1 · CH 4Expressions Using Letter-Numbers11 lessonsPART 1 · CH 5Parallel and Intersecting Lines10 lessonsPART 1 · CH 6Number Play10 lessonsPART 1 · CH 7A Tale of Three Intersecting Lines12 lessonsPART 1 · CH 8Working with Fractions10 lessonsPART 2 · CH 1Geometric Twins12 lessonsPART 2 · CH 2Operations with Integers12 lessonsPART 2 · CH 4Another Peek Beyond the Point10 lessonsPART 2 · CH 5Connecting the Dots…12 lessonsPART 2 · CH 6Constructions and Tilings11 lessonsPART 2 · CH 7Finding the Unknown11 lessons
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