Maths

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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

2 x 3 x 72 x 3 x 32 x 216 x 7

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

5 x 7 x 5 x 25 x 7 x 1035 x 2 x 5350

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Q3.Express 1750 as a product of its prime factors

2 x 5 x 5 x 5 x 710 x 1752 x 5 x 1752 x 5 x 5 x 35

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Q4.Which is larger?

4 squaredNeither - they are equal2 to the power of 4

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Q5.Which of these numbers is prime?

37875775

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Q6.75 = 15 x .....

531525

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Q7.What is the HCF of 30 and 42?

4612

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

41456

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

TrueFalse

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Q10.Find the LCM of 14 and 21

294422172 and 3

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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?

TrueFalse

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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.

2 × 2 × 3 × 72 × 2 × 3 × 52 × 2 × 3 × 7 × 52, 2, 3, 5

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