Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find...
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Transcript of Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find...
![Page 1: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/1.jpg)
Venn Diagrams to find the HCF and
LCM
![Page 2: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/2.jpg)
What’s It All About?
You are going to learn:
How to find the HCF or the LCM of two or more values using a Venn Diagram.
What skills should you have already?
You need to be able to write a number as the product of its prime factors.
![Page 3: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/3.jpg)
Find the HCF and LCM of 24 and 60.
Draw factor trees for 24 and 60.
Example: 24 and 60
24
2 12
2 6
2 3
60
2 30
2 15
3 5
24 = 2 2 2 3 60 = 2 2 3 5
![Page 4: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/4.jpg)
Example: 24 and 6024 = 2 2 2 3 60 = 2 2 3 5
Now put this information into a Venn diagram.
A Venn diagram is a visual way of representing information. A circle is used to represent each set of information. If some
information is in more than one set, the circles will overlap.
A Venn diagram is a visual way of representing information. A circle is used to represent each set of information. If some
information is in more than one set, the circles will overlap.
![Page 5: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/5.jpg)
Example: 24 and 6024 = 2 2 2 3 60 = 2 2 3 5
Now put this information into a Venn diagram.
The rectangle and the symbol are used to show the universal set
– in other words everything possible is contained within this
rectangle (as in a universe).
The rectangle and the symbol are used to show the universal set
– in other words everything possible is contained within this
rectangle (as in a universe).
![Page 6: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/6.jpg)
Example: 24 and 6024 = 2 2 2 3 60 = 2 2 3 5
Now put this information into a Venn diagram.
22
32 5
24 60
![Page 7: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/7.jpg)
How can this be used to find the highest common factor?
The largest value that is a factor of 24 and 60 is found here:
Example: 24 and 60
22
32 5
24 60
Multiply the prime factors that are in the
overlap together to
find the HCF: 2 2 3 =
12
Multiply the prime factors that are in the
overlap together to
find the HCF: 2 2 3 =
12
![Page 8: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/8.jpg)
How can this be used to find the lowest common multiple?
The smallest value that is a multiple of 24 and 60 is found here:
Example: 24 and 60
22
32 5
24 60 Multiply all the prime factors in
the Venn diagram together to find the
LCM:2 2 2 3 5 =
120
Multiply all the prime factors in
the Venn diagram together to find the
LCM:2 2 2 3 5 =
120
![Page 9: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/9.jpg)
HCF = 12
LCM = 120
Example: 24 and 60
22
32 5
24 60
Make sure you
understand why this is
true…
Make sure you
understand why this is
true…
![Page 10: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/10.jpg)
Draw a Venn Diagram and use it to find the HCF and LCM for:
1. 48 and 722. 60 and 1443. 75 and 2004. 648 and 7205. 36, 63 and 108
Your Turn
![Page 11: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/11.jpg)
Draw a Venn Diagram and use it to find the HCF and LCM for:
1. 48 and 72
Answers
22
32 3
48 72
2
HCF = 24LCM = 144
![Page 12: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/12.jpg)
Draw a Venn Diagram and use it to find the HCF and LCM for:
2. 60 and 144
Answers
2 2
35 3
60 144
2
HCF = 12LCM = 720
2
![Page 13: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/13.jpg)
Draw a Venn Diagram and use it to find the HCF and LCM for:
3. 75 and 200
Answers
22
3
5
75 200
5
HCF = 25LCM = 600
2
![Page 14: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/14.jpg)
Draw a Venn Diagram and use it to find the HCF and LCM for:
4. 648 and 720
Answers
22
3
3
648 720
5
HCF = 72LCM = 6480
22
33
![Page 15: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/15.jpg)
Draw a Venn Diagram and use it to find the HCF and LCM for:
5. 36, 63 and 108
Answers
23
3
36 63
7HCF = 9LCM = 756
32
108
![Page 16: Venn Diagrams to find the HCF and LCM. What’s It All About? You are going to learn: How to find the HCF or the LCM of two or more values using a Venn.](https://reader034.fdocuments.us/reader034/viewer/2022052207/56649d755503460f94a56a27/html5/thumbnails/16.jpg)
End