composite numbers - alamance-burlington school system · composite numbers prime composite...
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![Page 1: Composite Numbers - Alamance-Burlington School System · Composite Numbers prime composite composite. Prime Numbers. What is a prime number? A prime number is a whole number that](https://reader036.vdocuments.mx/reader036/viewer/2022062415/5fc605c538c421367e09bc02/html5/thumbnails/1.jpg)
Prime and
Composite Numbers
prime
composite
composite
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Prime Numbers
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What is a prime number?
A prime number is a whole number that has exactly two factors: 1 and the number itself.
Example: The factors of 2 are 1 and 2. This makes 2 a prime number.
2
1 2x
Why is 12 not a prime number?
The number 12 is not a prime number because it has more factors then 1 and itself.
3
12
6 2
2
x
x
2 1 x 2
121 x 122 x 63 x 4
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What is a composite number?
A composite number is a number that can be broken down into two or more factors.
Example: factors of 16 = 1, 2, 4, 8, 16. 16 is a composite number.
What are composite numbers between 1 and 30?
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Compute the prime factorization using stair
steps.
16
First, make a small list of prime numbers for reference..
2 x 2 x 2 x 2 = 24Prime Factorization
Second, build the steps by dividing into 16 using only prime numbers as divisors.
Third, write the equation.
![Page 6: Composite Numbers - Alamance-Burlington School System · Composite Numbers prime composite composite. Prime Numbers. What is a prime number? A prime number is a whole number that](https://reader036.vdocuments.mx/reader036/viewer/2022062415/5fc605c538c421367e09bc02/html5/thumbnails/6.jpg)
Compute the prime factorization using stair
steps.
50
First, make a small list of prime numbers for reference..
2 x 5 x 5 = 2 x 52Prime Factorization
Second, build the steps by dividing into 50 using only prime numbers as divisors.
Third, write the equation.
![Page 7: Composite Numbers - Alamance-Burlington School System · Composite Numbers prime composite composite. Prime Numbers. What is a prime number? A prime number is a whole number that](https://reader036.vdocuments.mx/reader036/viewer/2022062415/5fc605c538c421367e09bc02/html5/thumbnails/7.jpg)
Compute the prime factorization using stair
steps.
78
First, make a small list of prime numbers for reference..
Prime Factorization
Second, build the steps by dividing into 315 using only prime numbers as divisors.
Third, write the equation.
2X3X13
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Use the division method to find the prime factorization.
27 60 100
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Which of the following numbers are prime numbers?
1
A 51
B 7
C 29
D 9
Multiple answer
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Which of the following numbers are composite numbers?
2
A 8
B 23
C 36
D 41
Multiple answer
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3 Which of the following numbers are prime factors of 45?
A 2, 2, 7
B 3, 3, 5
C 3, 3, 7
D 5, 5, 7
Multiple choice
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4 How many prime numbers are there between 1 and 25?
A 9
B 12
C 14
D 15
Multiple choice
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Fill in the blanks with the correct word.
1. A _________________________ number has exactly
2 factors, ______________ and itself.
2. A composite _________________________ has
______________ than two factors.
3. A factor is a number that _______________________ into
a whole number _______________ leaving a remainder.
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Storage BoxPrime Numbers
1254
77
11
2
1931
99
100
3
17
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