Playing with Numbers

This CTET Paper 2 chapter builds Playing with Numbers for future Classes VI-VIII maths teachers: factors and multiples, primes and composites (including why 1 is neither), divisibility rules for 2, 3, 4, 5, 6, 8, 9, 10 and 11, prime factorisation, HCF and LCM by listing and by prime factors, common factors and multiples in stories, and classroom pedagogy for divisibility errors with TLM such as number cards and the sieve of Eratosthenes. Sibling topics Knowing Our Numbers, Whole Numbers, Integers, Fractions, Decimals, Algebra and broad Maths pedagogy stay one-line contrasts only.