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LCM AND HCF LCM AND HCF
USING PRIME FACTORISATION
Page 2


LCM AND HCF LCM AND HCF
USING PRIME FACTORISATION
LEARNING OUTCOMES
Understand how to
find LCM and HCF
by listing out
multiples
 and factors
Use prime
factorisation
to find HCF
and LCM
Page 3


LCM AND HCF LCM AND HCF
USING PRIME FACTORISATION
LEARNING OUTCOMES
Understand how to
find LCM and HCF
by listing out
multiples
 and factors
Use prime
factorisation
to find HCF
and LCM
L C M
LCM stands for the
lowest common
multiple of two
numbers.
H C F
HCF stands for the
highest common
factor of two
numbers
K E Y W O R D S
K E Y W O R D S
Page 4


LCM AND HCF LCM AND HCF
USING PRIME FACTORISATION
LEARNING OUTCOMES
Understand how to
find LCM and HCF
by listing out
multiples
 and factors
Use prime
factorisation
to find HCF
and LCM
L C M
LCM stands for the
lowest common
multiple of two
numbers.
H C F
HCF stands for the
highest common
factor of two
numbers
K E Y W O R D S
K E Y W O R D S
LOWEST COMMON MULTIPLE
Find the LCM of 12 and 16
Multiples appear
in the number's
times tables
Multiples of 12:
Multiples of 16:
12, 24, 36, 48, 60
16, 32, 48, 64, 80
LCM = 48
Page 5


LCM AND HCF LCM AND HCF
USING PRIME FACTORISATION
LEARNING OUTCOMES
Understand how to
find LCM and HCF
by listing out
multiples
 and factors
Use prime
factorisation
to find HCF
and LCM
L C M
LCM stands for the
lowest common
multiple of two
numbers.
H C F
HCF stands for the
highest common
factor of two
numbers
K E Y W O R D S
K E Y W O R D S
LOWEST COMMON MULTIPLE
Find the LCM of 12 and 16
Multiples appear
in the number's
times tables
Multiples of 12:
Multiples of 16:
12, 24, 36, 48, 60
16, 32, 48, 64, 80
LCM = 48
HIGHEST COMMON FACTOR
Find the HCF of 12 and 16
Factors are
numbers that
divide into a
number
exactly
Factors of 12:
Factors of 16:
1, 2, 3, 4, 6, 12
1, 2, 4, 8, 16
HCF = 4
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