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Multiple, factor 2 (grade 7- Maths- week 3)
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HCF of 28 and 126
14
HCF of 18 and 45
9
HCF of 15 and 21
3
LCM of 28 and 126
252
LCM of 18 and 45
90
LCM of 15 and 21
105
Find the HCF for 24 and 3
3
Find the LCM and HCF of 24 and 60.
12
a VISUAL WAY to REPRESENT INFORMATION, and can be used in many different subjects.
A Venn Diagram
Prime Factorisation of 90?
90 = 2 x 3 x 3 x 5
Prime Factorisation of 60?
60 = 2 x 2 x 3 x 5
the prime factorisation of 24 is?
2 x 2 x 2 x 3 = 24
finding the list of the number's prime numbers that divide it.
The prime factorisation of a number
What's the next prime number after 29?
31
list the first 10 prime numbers
2, 3, 5, 7, 11, 13, 17, 19, 23, and 29
A number that is greater than 1 and has only two factors, 1 and the number itself
prime number
Find the HCF of 24 and 30
6
Find the HCF of 30 and 45
15
find the HCF of 12 and 24
12
the LARGEST FACTOR that is SHARED
A Highest common factor (HCF)
What are the factors of 121 ?
1,11,21
What are the factors of 10?
1,2,5,10
find the factors of 15.
1,3,5,15
Can you list the factors of 50?
1,2,5,10,25,50
the NUMBERS YOU MULTIPLY to get another number.
Factors
Find the LCM for 6 and 10
30
Find the LCM for 16 and 4
16
Let's find the LCM of 3 and 4
12
A SMALLEST MULTIPLE that is SHARED.
A Lowest common multiple (LCM)
Find the common multiples of 3 and 4.
12,24,36,....
a multiple that TWO or MORE NUMBER SHARES.
COMMON MULTIPLES
What are the first 5 multiples of 112 ?
112,224,336,448,560
What are the first 5 multiples of 6?
6,12,18,24,30
Can you list the multiples of 5?
5,10,15,20,25,30,35,....
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