Prime Time — Formula Sheet
CBSE · Class 6 · Mathematics
7 formulas from Prime Time (CBSE Class 6 Mathematics) on one page, grouped by topic. Part of the CBSE Class 6 Mathematics syllabus.
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Formulas and Key Relations
Common Multiples and Common Factors
Common multiples = numbers that are multiples of both given numbers
Common factors = factors of both given numbers
Perfect number condition: sum of all factors of a number = twice the number
Prime Numbers and Composite Numbers
Prime number = has exactly two factors
Sieve of Eratosthenes
Circle 2, cross out multiples of 2; circle next uncrossed number, then cross out its multiples
Co-prime Numbers
Two numbers are co-prime if they have no common factor other than 1
If there are no common prime factors, then two numbers are co-prime
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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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