Least Common Multiple.

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Presentation transcript:

Least Common Multiple

Product The answer to a multiplication problem. 6 X 6 = 36

What is the product? 7 X 8 = 56

Some multiples of 6 6, 12, 18, 24, 30, 36, 42 Multiple The product of a whole number multiplied times any other whole number. Some multiples of 6 6, 12, 18, 24, 30, 36, 42

Name some multiples of 5 5, 10, 15, 20, 25, 30, 35

Name some multiples of 7 7, 14, 21, 28, 35, 42, 49

Name some multiples of 4 4, 8, 12, 16, 20, 24, 28

Name some multiples of 9 9, 18, 27, 36, 45, 54, 63

12/1/11 Get out your homework. Bellringer: Divide WITHOUT A CALCULATOR! 35÷7 -81 ÷ -9 32 ÷ -8

Homework Answers 6. 2 7. 4 8. 10 9. 4 10. 10

Some multiples of 3 & 6 6, 12, 18, 24, 30, 36, 42 Common Multiple A number that is a multiple of two or more numbers. Some multiples of 3 & 6 6, 12, 18, 24, 30, 36, 42

What are some Common Multiples for 2 & 8? 8, 16, 24, 32, 40, 48, 56

What are some Common Multiples for 4 & 6? 12, 24, 36, 48, 56, 60

What are some Common Multiples for 3 & 7? 21, 42, 63

What are some Common Multiples for 5 & 10? 10, 20, 30, 40, 50, 60

Least Common Multiple The smallest common multiple of a set of two or more numbers. 5 = 5, 10, 15, 20, 25, 30 6 = 6, 12, 18, 24, 30, 36

What is the Least Common Multiple of 3 & 8 3 = 3, 6, 9, 12, 15, 21, 24 8 = 8, 16, 24, 32, 40, 48

What is the Least Common Multiple of 4 & 8 4 = 4, 8, 12, 16, 20, 24 8 = 8, 16, 24, 32, 40, 48

What is the Least Common Multiple of 6 & 8 6 = 6, 12, 18, 24, 30, 36 8 = 8, 16, 24, 32, 40, 48

What is the Least Common Multiple of 4 & 10 4 = 4, 8, 12, 16, 20, 24 10 = 10, 20, 30, 40, 50,

What is the Least Common Multiple of 3 & 9 3 = 3, 6, 9, 12, 15, 21, 9 = 9, 18, 27, 36, 45, 54

Example: Bob goes to the park every 3 days. Sally goes to the park every 9 days. Which days will they both be at the park? When is the soonest they will be in the park together?

Worksheet

Icky Factor Video http://www.youtube.com/results?search_query=cyberchase+the+icky+factor&aq=f

12/2/11 Test Today! Turn in your GCF and LCM worksheets! When you are finished with your test you have PAT: Make up work Tessellation Study Island Computer Games