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Australia
Year 7

1.12 HCF and LCM

Interactive practice questions

Consider the numbers $100$100 and $42$42.

a

List all the factors of $100$100. Write them all on the one line separated by a comma.

b

List all the factors of $42$42. Write them all on the one line separated by a comma.

c

Hence find the highest common factor of $100$100 and $42$42.

Easy
3min

Consider the numbers $36$36 and $4$4.

Easy
2min

What is the highest common factor of $8$8 and $6$6?

Easy
< 1min

What is the highest common factor of $40$40 and $70$70?

Easy
< 1min
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Outcomes

ACMNA149

Investigate index notation and represent whole numbers as products of powers of prime numbers

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