Why halves make sense and sevenths do not, and how to get past it.
This article is still being written by Arjun S.. It will carry the same shape as the others: a short summary, the thing to look for at home, three casual questions to ask, and a small piece of practice to try over a term.
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Read the finished articles in Maths, or ask us on WhatsApp — a teacher answers, and the question may well shape what this piece covers.
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