Lowest Common Multiple

abbylebus
Mind Map by , created over 6 years ago

Maths (Number) Mind Map on Lowest Common Multiple, created by abbylebus on 05/12/2013.

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abbylebus
Created by abbylebus over 6 years ago
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Lowest Common Multiple
1 The least common multiple (LCM) is the lowest number that is a multiple of 2 or more numbers.
2 e.g find the LCM of 12 and 20:
2.1 12
2.1.1 2
2.1.1.1
2.1.2 6
2.1.2.1 3
2.1.2.1.1
2.1.2.2 3
2.1.2.2.1 THESE ARE THE PRIME NUMBERS.
2.2 20
2.2.1 2
2.2.1.1
2.2.2 10
2.2.2.1 2
2.2.2.1.1
2.2.2.2 5
2.2.2.2.1 THESE ARE THE PRIME NUMBERS.
2.3 Write the numbers as a product of their prime factors.
2.3.1 12=2x2x3
2.3.1.1 Start to cross them off in a venn diagram and you will end up with:
2.3.1.1.1 The LCM of 12 and 20 is: 2x2x3x5=60
2.3.2 20=2x2x5
2.3.2.1

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