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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

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

ReplyDeleteThe highlighted numbers are conjectures

ReplyDeleteThe non-highlighted numbers are prime numbers

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

ReplyDeleteexamples of conjectures: 4,6,8,12,77,87

Deleteexamples of primes: 2,3 ,5,73,83

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

ReplyDeleteHighlights ones are Composites, while non-highlighted ones are Prime

ReplyDeletePrime: 101, 103

DeleteComposite: 102, 104

Is 1 a composite number?

Deletethe numbers which are not highlighted are prime numbers

ReplyDeleteThe non highlighted ones are prime numbers , the highlighted numbers are not prime numbers .

ReplyDeleteThe Numbers in white background are Prime Numbers

ReplyDeleteExamples - 101,103,107

The numbers in blue background are Not Prime Numbers

Examples - 102,104,105

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ReplyDelete1)The highlighted ones are composite numbers while the ones highlighted are prime numbers.

ReplyDelete2) 103 is a prime number while 102 is a composite.

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ReplyDeleteThe 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.

ReplyDeleteThis comment has been removed by the author.

ReplyDelete(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.

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

1) Highlighted are composite while not highlighted ones are prime numbers

ReplyDelete2) Prime :197,199 Composite: 111,112

(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)

ReplyDeleteThe 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.

ReplyDelete(1)All the unhighlighted numbers are prime numbers, all the highlighted numbers, other than 1, are composite numbers

ReplyDelete(2)Examples of prime: 2 and 97

Example of composite: 4 and 100

The Numbers in white background are Prime Numbers

ReplyDeleteExamples - 101,103,107

The numbers in blue background are Not Prime Numbers

Examples - 102,104,105

Shaun Ho

(19)

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.

ReplyDeleteExample of prime numbers: 2,97

Example of composite numbers: 4,100

the highlighted numbers are composite numbers such as 202 and 204.

ReplyDeletethe unhighlighted numbers are prime numbers such as 213 and 217.

source: www.mathsisfun.com/definitions/composite-number.html

The highlighted numbers are composite numbers whereas the non-highlighted numbers are prime numbers.

ReplyDeleteExamples of prime numbers: 101,113

Examples of composite numbers: 122,144

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

ReplyDeleteExample 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.)

BLUE IS NOT PRIME NUMBER

ReplyDeleteWHITE 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

1)The highlighted numbers are composite number which means that the number has more than

ReplyDeletetwo 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