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Key
Idea
Some numbers
have common
factors other
than one. |
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Greatest
Common Factor |
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Vocabulary
• factor (p. 66)
• common factors
• greatest common
factor (GCF) |
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How many are on
each team? |
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There are 18 boys
and 24 girls who will be
divided into teams. Each team will consist of either all boys
or all girls. Each team will have an equal number of players. |
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| a. |
Name all
possible teams of only boys (1 team of
18 boys, 2 teams of 9 boys, and so on). |
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Name all possible teams consisting of only girls.
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| c. |
What is
the largest number of people that each
team can have? |
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| d. |
Suppose
there are 12 boys and 15 girls. What is the
greatest number of people each team can have? Explain. |
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How can you find the
greatest common factor? |
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The greatest common factor (GCF) of two numbers
is the greatest number that is a factor of both. |
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Find
the greatest common factor of 18 and 24. |
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| List
the factors of 18 and 24. |
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pairs of common factors and find the GCF. |
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greatest common factor of 18 and 24 is 6. |
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Talk About It |
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1.
Name all the common factors for 18 and 24. |
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| 2. |
Is 3 also
a greatest common factor of
18 and 24? Explain. |
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