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Unit Quiz

# Prime factor decomposition

This quiz will help you to assess your learning of key concepts and knowledge in this unit.

Q1.Express 42 as a product of its prime factors

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Q2.Express 35 x 10 as a product of its prime factors.

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Q3.Express 1750 as a product of its prime factors

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Q4.Which is larger?

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Q5.Which of these numbers is prime?

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Q6.75 = 15 x .....

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Q7.What is the HCF of 30 and 42?

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Q8.What number should replace the square in the Venn diagram?

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Q9.True or False? Sometimes there isn’t a highest common factor!

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Q10.Find the LCM of 14 and 21

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Q11.Zaki says that 2 prime numbers LCM is found by multiplying the prime numbers together, Is this true or false?

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Q12.The Venn diagram shows the prime factors of 60 and 84. Write 84 as a product of its prime factors.

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