5 Minute CheckFind the prime factorization for each number.

1. 1282. 923. 2424. 256

Friday, August 30

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76Is this number divisible by 2,3,4,5,6,9,10?

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76Is this number divisible by 2,3,4,5,6,9,10?

76 is divisible by 2 and 4.

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453Is this number divisible by 2,3,4,5,6,9,10?

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453Is this number divisible by 2,3,4,5,6,9,10?

453 is divisible by 3.

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64800Is this number divisible by 2,3,4,5,6,9,10?

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64800Is this number divisible by 2,3,4,5,6,9,10?

453 is divisible by 2, 3, 4, 5, 6, 9 and 10.

ReviewIf a number only has two factors, one and itself,

it is called what?

ReviewIf a number only has two factors, one and itself,

it is called what?

A prime number

ReviewIf a number has more than two factors it is

called what?

ReviewIf a number has more than two factors it is

called what?

A composite number

ReviewIs 34 a prime or composite number?

ReviewIs 34 a prime or composite number?

Composite number.

Remember - all even numbers, except for 2, are composite.

ReviewIs 51 a prime or composite number?

ReviewIs 51 a prime or composite number?

Composite number.

5 + 1 = 6It is divisible by 3

ReviewIs 65 a prime or composite number?

ReviewIs 65 a prime or composite number?

Composite number.

Since the last digit is a 5, it is divisible by 5.

ReviewIs 53 a prime or composite number?

ReviewIs 53 a prime or composite number?

Prime number.

ReviewIs 88 a prime or composite number?

ReviewIs 88 a prime or composite number?

Composite Number

ReviewList all factors for 26.

ReviewList all factors for 26.

26: 1, 2, 13, 26

ReviewList all factors for 25.

ReviewList all factors for 25.

25: 1, 5, 25

ReviewList all factors for 32.

ReviewList all factors for 32.

32: 1, 2, 4, 8, 16, 32

ReviewCreate a factor tree for 26.

ReviewCreate a factor tree for 26.

26 / \ 2 X 13

ReviewCreate a factor tree for 25.

ReviewCreate a factor tree for 25.

25 / \ 5 X 5

ReviewCreate a factor tree for 24.

ReviewCreate a factor tree for 24.

24 / \ 2 X 12 I / \

2 X 2 X 6 I I / \ 2 X 2 X 2 X 3

ReviewCreate a factor tree for 66.

ReviewCreate a factor tree for 66.

66 / \ 2 X 33 I / \

2 X 3 X 11

ReviewCreate a factor tree for 42.

ReviewCreate a factor tree for 42.

42 / \ 2 X 21 I / \

2 X 3 X 7