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**Some Interesting Math and Everyday-Life Facts About 25**

The Number 25 Some Interesting Math and Everyday-Life Facts About 25 By Adrian Signell

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**I Chose 25 Because… I wanted to know more about 25 in general.**

I see it very often in everyday-life and wanted to know more about it, in what cultures it’s special, etc.

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**Math Facts About 25 25’s Factors are 1,5 and 25**

It is a square number (5x5) It is an odd number It is a composite number Can be dived into 100 Equally Is a forth of 100 Proper Factors; abundant/deficient; divisors etc?? VOCABULARY EXPLAINED??? Divides into 100 evenly - if you divide 25 into 100 (pieces), you get 0.25 Fourth, not forth

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**Interesting Facts About 25**

December 25 is known as Christmas Day Pachisi (Hindu word for 25) is one of the national games of India It takes 25 earth days for the sun to complete a rotation on itself 25 is the number of years of marriage marked in a silver wedding anniversary. 25 is the name of the national card game of Ireland Spanish football goalkeeper Pepé Reina wears kit number 25

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Prime Time Pg.21 Would you’re special number be a good starting number in the factor and product game? Why or Why not? The number 25 would be a good starting number in the factor game because you would get 25 points and your opponent would only get 6 points. However, 25 would not be a good starting number in the product game because 25 is on the far left side of the game board when your trying to get a number in the middle. You’re (= you are) not your

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**Prime Time Pg. 36 Is your special number odd or even? Explain.**

The number 25 is an odd number because it is not divisible by 2 and every even number is divisible by 2. What are the factor pairs of your special number? The factor pairs of 25 are 1 and 25, 5 and 5 (square).

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**The prime factorization of 25 is:**

Prime Time Pg.60 The prime factorization of 25 is: 25 / \ 5 x 5 In other words: 5x5

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**What Relationship Does The Sun Have With 25?**

Ending Quiz What Relationship Does The Sun Have With 25? The average temperature on the sun is 25 degrees Celsius. b. It takes 25 Earth days for the sun to make a full rotation on itself. c. The sun’s mass is 25 billion Kg. d. If you’re within 25km of the sun you will melt. You’re not your Within not with

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**You should work on your listing skills…**

WRONG! You should work on your listing skills… Listening???

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**Could you have done any worse????**

WRONG! Could you have done any worse????

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WRONG! My great-great grandmother has better hearing than you… and she’s dead!

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CORRECT! I will personally speak with Ms. Maggie about your great listening skills.

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**Hope you enjoyed Adrian’s marvelous slide show about the number… 25!**

THE END! Hope you enjoyed Adrian’s marvelous slide show about the number… 25! Great fun, Adrian - loved the quiz!! Also lots of interesting information. Well done- you obviously spent time and effort on this! Just need to make sure in future to check wiki for checklist and mark scheme. 17/20 Adrian - WHERE IS THE VOCAB EXPLAINED?? ABUNDANT/DEFICIENT?? You can edit before we mount on wiki

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