1. Factors
Factor ladders
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2. Take the smallest prime you can
These are the prime numbers
Take the smallest prime you can
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, ………..
Find the prime factors of 24 2 24 2 12 2 6 3 3 1
24 = 2 X 2 X 2 X3
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3. Take the smallest prime you can
These are the prime numbers
Take the smallest prime you can
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, ………..
Find the prime factors of 24 and 36 2 24 2 36 2 12 2 18 2 6 3 9 3 3 3 3 1 1
24 = 2 X 2 X 2 X3
36= 2 X X 3 X 3
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4. Take any column that has two numbers
24 = 2 X 2 X 2 X 3
Take any column that has two numbers
36 = 2 X X 3 X 3
HCF = 2 X X 3
HCF = 12
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5. Put an arrow on every column
24 = 2 X 2 X 2 X 3
Put an arrow on every column
36 = 2 X X 3 X 3
LCM = 2 X 2 X 2 X 3 X 3
LCM = 72
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