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Secondary 1 | Maths
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Secondary 1 chevron_right Maths chevron_right Singapore

Help! Happy Chinese New Year!

Date Posted: 1 year ago
Views: 199

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Low Yi Yin
Low Yi Yin's answer
251 answers (Tutor Details)
1st
The factors of HCF can be seen as 'compulsory factors' in the two numbers (5^2 x 7).The factors of LCM can be seen as 'additional factors' (2^3 and 3^2).

I split the 'additional factors' into two numbers instead of all into one because this would make one of the numbers = 175 (seen in other combination 1)

Students also ask whether they can put like x2 / x3 in other number. But this will lead to HCF being not equal to 175 (seen in other combination 2)

Hope this helps! ;))
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1 year ago
Thanks