Class 5 (ICSE) • MathematicsChapter 3: Factors, Multiples, HCF and LCM⭐ Topic 1
Factors, Multiples, HCF and LCM
HCF (Highest Common Factor) is the largest number that divides two numbers exactly, while LCM (Lowest Common Multiple) is the smallest numbe
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To find the HCF of two numbers, we list their factors and find the largest factor common to both.
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- HCF is the largest common factor of two numbers.
- LCM is the smallest common multiple of two numbers.
- Factors of 12: 1,2,3,4,6,12.
- Factors of 18: 1,2,3,6,9,18.
- HCF of 12 and 18 is 6.
- LCM is found using common multiples.
- HCF and LCM help simplify fractions.
- They help solve grouping and time interval problems.
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factorsmultiples