Factors Divisibility and Prime Factorisation: Bilingual Lesson and Practice
Understand factors, multiples, divisibility and prime factorisation through bilingual explanations, worked examples and 12 practice questions with complete answers.
A free original bilingual lesson on positive-integer factors, multiples, primes, composites and co-prime numbers. Learn the reasons behind divisibility tests for 2, 3, 4, 5, 6, 8, 9, 10 and 11, construct and check prime factorisations, and understand when divisibility by two numbers guarantees divisibility by their product. Worked examples, an analogy, a quick reference and 12 explained practice questions prepare you for the later HCF, LCM, fractions and square-root lessons. This is one topic in Numbers and Calculation, not a complete RRB Mathematics course or full CBT simulation.
