– Factors and Multiples of a Number

– Prime and Composite Numbers

– Divisibility Test : 2,3,4,5,6,8,9,10,11

– Divisibility Test: Workout

– LCM and HCF of Numbers by Observation

– LCM and HCF of Numbers by Prime Factorisation

– LCM and HCF of Numbers by Long Division

– HCF by Euclids Algorithm and Special Cases of LCM and HCF

– Application of LCM and HCF in the Real World