Write a prime factorisation using powers
6th grade (Year 7 in England) · 16 questions · Common Core: 6.NS.B.4, 6.EE.A.1 · England: KS3 Number, GCSE Foundation Number
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Score/ 16
Question 1
Write 44 as a product of prime factors in index form (for example 2^3 × 5).
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Question 2
What number has the prime factorisation 2² × 3²?
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Question 3
770 = □ × 5 × 7 × 11. Every factor is prime. What prime goes in the box?
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Question 4
Write 56 as a product of prime factors in index form (for example 2^3 × 5).
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Question 5
What number has the prime factorisation 2² × 3 × 5?
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Question 6
210 = 2 × 3 × 5 × □. Every factor is prime. What prime goes in the box?
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Question 7
Write 20 as a product of prime factors in index form (for example 2^3 × 5).
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Question 8
What number has the prime factorisation 2⁴ × 3² × 5²?
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Question 9
495 = □ × 3 × 5 × 11. Every factor is prime. What prime goes in the box?
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Question 10
Write 63 as a product of prime factors in index form (for example 2^3 × 5).
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Question 11
What number has the prime factorisation 2² × 5²?
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Question 12
220 = 2 × □ × 5 × 11. Every factor is prime. What prime goes in the box?
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Question 13
Write 100 as a product of prime factors in index form (for example 2^3 × 5).
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Question 14
What number has the prime factorisation 2 × 3 × 5?
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Question 15
220 = 2 × 2 × 5 × □. Every factor is prime. What prime goes in the box?
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Question 16
Write 12 as a product of prime factors in index form (for example 2^3 × 5).
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