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    Secondary 1 Elementary Mathematics Online Course Thumbnail
    6 Lessons

    1EM Unit 1 – Primes, HCF and LCM

    Learning Objectives:
    • Understand the definition of prime numbers and composite numbers.
    • Determine whether a whole number is prime or composite.
    • Express a composite number as the product of its prime factors, i.e., perform the prime factorisation.
    • Solve problems involving perfect square, perfect cube, square root, or cube root using prime factorisation.
    • Find the highest common factor (HCF) and the lowest common multiple (LCM) of two or more whole numbers.
    • Solve problems involving the real-world applications of prime numbers, HCF and LCM.

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