Numbo the maths kitten
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Fundamental Theorem of Arithmetic
5
questions
✓
Choose the best answer
1
140 factorised into primes is what?
🔊
A
2² × 5 × 7
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B
2 × 5² × 7
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2
The HCF of 12 and 18 (via prime factorisation) is what?
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A
6
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B
3
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3
The LCM of 12 and 18 is what?
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A
36
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B
24
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4
By the Fundamental Theorem of Arithmetic, how many prime factorisations does a number have (ignoring order)?
🔊
A
Exactly one (unique)
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B
More than one
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5
HCF × LCM of two numbers equals what?
🔊
A
The product of the two numbers
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B
The sum of the two numbers
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