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Published byEverett Parsons Modified over 3 years ago

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**Even Numbers – Any number that can be divided by 2**

Odd Numbers – Any number that cannot be divided by 2

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**ODD OR EVEN. 1. Write O for odd and E for even 2**

ODD OR EVEN? 1. Write O for odd and E for even 2. Find the half of the number ____ ____ ___ ____ ___ ____ ___ _____ ___ ____ ___ ____

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WHAT NUMBERS ARE PRIME? Let’s look at a number grid from 1 to 100 and see how they were discovered.

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**Take out the number 1 because it is a special number**

HERE’S HOW YOU DO IT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Take out the number 1 because it is a special number

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**Take out the number 1 because it is a special number**

HERE’S HOW YOU DO IT 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Take out the number 1 because it is a special number

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**Take out numbers that have a composite factor of 2**

HERE’S HOW YOU DO IT 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Take out numbers that have a composite factor of 2

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HERE’S HOW YOU DO IT 2 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 Take out numbers that have a composite factor of 2 Extra help: Even numbers different from 2.

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**Take out numbers that have a composite factor of 3**

HERE’S HOW YOU DO IT 2 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 Take out numbers that have a composite factor of 3

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**Take out numbers that have a composite factor of 3**

HERE’S HOW YOU DO IT 2 3 5 7 11 13 17 19 23 25 29 31 35 37 41 43 47 49 53 55 59 61 65 67 71 73 77 79 83 85 89 91 95 97 Take out numbers that have a composite factor of 3

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Here’s How You Do It 2 3 5 7 11 13 17 19 23 25 29 31 35 37 41 43 47 49 53 55 59 61 65 67 71 73 77 79 83 85 89 91 95 97 Take out numbers that have a composite factor of 5

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**Take out numbers that have a composite factor of 5**

HERE’S HOW YOU DO IT 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 49 53 59 61 67 71 73 77 79 83 89 91 97 Take out numbers that have a composite factor of 5

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Here’s How You Do It 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 49 53 59 61 67 71 73 77 79 83 89 91 97 Take out numbers that have a composite factor of 7

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**Take out numbers that have a composite factor of 7**

The PRIME Numbers! 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 Take out numbers that have a composite factor of 7

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**How do we know numbers are prime?**

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**A prime number cannot be divided by anything other than 1 and itself.**

That’s It! A prime number cannot be divided by anything other than 1 and itself. These are numbers that have only two factors – themselves and one. An example of Prime Numbers would be… 1,3 (3 1) (3 1) (3 3)

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**How do we know numbers are composite?**

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**That’s It! Numbers that have more than two factors . One is included**

An example of composite numbers would be: 1,12 2,6 3,4 (1*12) (2*6) (3*4)

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PRIME OR COMPOSITE?

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96

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Composite Number 96 = 1,96 2,38 3, ,24 6,16 8,12,

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15

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Composite Number 15= 1,3,5,15

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47

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Prime Number 47= 1, 47

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93

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Composite Number 93= 1,93 3,31

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54

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Composite Number 54 = 1, , ,18 6,9

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57

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Composite Number 57= 1, ,19

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19

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Prime Number 19= 1,19

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Prime Factorization Objective: Find the prime factorization of a composite number.

Prime Factorization Objective: Find the prime factorization of a composite number.

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