Class 5 · Mathematics · Hard level · 5 questions
Prime & Composite Numbers: Apply It
Numbers with exactly two factors, and everything else. In Class 5 Mathematics the topic covers counting the factors, the primes you should know, testing a number and two special cases. This quiz is the hardest level, with Class 5 exam-style questions that mix the ideas together. 5 questions (multiple choice), marked the moment you finish, with the reason for every answer.
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Your score is saved against Prime & Composite Numbers, so you can see which topics are solid and which need another go.