5 pages · least common multiple by listing, prime factorisation and the ladder method
LCM of two numbers, worked
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The LCM is taught in Grade 5 and 6 in the US (Common Core 6.NS.4), Year 6 and 7 in the UK, Class 5 and 6 in CBSE and Year 6 and 7 in Australia, usually together with the HCF or GCF.
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