Wednesday, January 18, 2017

NUMBER SYSTEM 2

NUMBER SYSTEM AND CLASSIFICATION 2
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The table above shows 2 categories of numbers as depicted by the blue and white shadings. Your task is (1) identify these categories of numbers and (2) give 2 additional examples each per category.



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post your responses as a 'comment'


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FOLLOW-UP ACTIVITY
Prime Numbers & Sieve of Erastosthenes

Complete
1.1.4 Prime Puzzle Page 3

1.1.5 B Goldbach Conjecture Page 4


30 comments:

  1. Those that are highlighted are not prime numbers while those that are not highlighted are prime numbers

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  2. The highlighted numbers are conjectures
    The non-highlighted numbers are prime numbers

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  3. The highlighted numbers are conjectures while the non highlighted ones are prime numbers.

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    Replies
    1. examples of conjectures: 4,6,8,12,77,87
      examples of primes: 2,3 ,5,73,83

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  4. All the highlighted numbers are not prime numbers. Numbers that are not highlighted are prime numbers

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  5. Highlights ones are Composites, while non-highlighted ones are Prime

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  6. the numbers which are not highlighted are prime numbers

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  7. The non highlighted ones are prime numbers , the highlighted numbers are not prime numbers .

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  8. The Numbers in white background are Prime Numbers
    Examples - 101,103,107

    The numbers in blue background are Not Prime Numbers
    Examples - 102,104,105

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  10. This comment has been removed by the author.

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  11. This comment has been removed by the author.

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  12. 1)The highlighted ones are composite numbers while the ones highlighted are prime numbers.
    2) 103 is a prime number while 102 is a composite.

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  14. The unhighlighted numbers(white) are prime numbers,while the highlighted numbers(blue) are composite numbers.Two more prime numbers are 103 and 107 and two more composite numbers are 106 and 108.

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  16. (1) All the unhighlighted numbers which are white are prime numbers, the numbers which are highlighted in blue except for 1 are all composite numbers.

    (2) Two Examples of prime numbers are 2 and 97 and two examples of composite numbers are 4 and 100.

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  17. 1) Highlighted are composite while not highlighted ones are prime numbers
    2) Prime :197,199 Composite: 111,112

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  18. (1)The highlighted ones are Non Prime Numbers while the untouched ones are Prime Numbers.Examples for Prime Numbers are (111,113).Examples for Non Prime numbers are (120,105)

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  19. The highlighted number are composite numbers which means numbers that can a whole number that can be divided evenly by numbers other than 1 or itself. Example: 9 can be divided evenly by 3 (as well as 1 and 9), so 9 is a composite number. 6 can be divided evenly by 1, 2, 3 and 6 so it is NOT a prime number (it is a composite number). While the unhighlighted numbers are prime numbers A prime number is a whole number greater than 1, whose only two whole-number factors are 1 and itself. The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.

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  20. (1)All the unhighlighted numbers are prime numbers, all the highlighted numbers, other than 1, are composite numbers
    (2)Examples of prime: 2 and 97
    Example of composite: 4 and 100

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  21. The Numbers in white background are Prime Numbers
    Examples - 101,103,107

    The numbers in blue background are Not Prime Numbers
    Examples - 102,104,105
    Shaun Ho
    (19)

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  22. All the numbers in the white boxes are prime numbers, while the numbers in the blue boxes are composite numbers. However, 1 is neither a prime nor composite number.

    Example of prime numbers: 2,97
    Example of composite numbers: 4,100

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  23. the highlighted numbers are composite numbers such as 202 and 204.
    the unhighlighted numbers are prime numbers such as 213 and 217.
    source: www.mathsisfun.com/definitions/composite-number.html

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  24. The highlighted numbers are composite numbers whereas the non-highlighted numbers are prime numbers.
    Examples of prime numbers: 101,113
    Examples of composite numbers: 122,144

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  25. The highlighted numbers are not prime numbers, while the ones not highlighted are prime numbers.

    Example of Prime Numbers are: 101 and 131 cause as it only has two factors in it. (Eg: 101 is 1x101, and 131 is 1x131)

    Examples of Non-Prime Numbers are: 102 and 150 as it has more than two factors (Eg: 102 has 1, 102, 2, 51. and 150 has 1, 150, 2, 75, 3, 5, 30, 50.)

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  26. BLUE IS NOT PRIME NUMBER
    WHITE IS PRIME NUMBER
    additional prime numbers: 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199

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  27. 1)The highlighted numbers are composite number which means that the number has more than
    two different factors which mean that they can be divided evenly.The unhighlighted numbers
    are prime numbers .these numbers only have exactly two different factors.that is the number itself and 1.
    2)Examples of composite numbers:16 25 55
    Examples of prime numbers:3 7 97 89

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