Letters in Numbers

A Maths Starter of The Day

Can You Find...

... an even number with an odd number of letters?

 

 ... a square number with a prime number of letters?

 

 ... a cube number with a triangular number of letters?

 
... an odd number with an even number of letters?

 

 ... a prime number with a square number of letters?

 

 ... a triangular number with a cube number of letters?

 

 

 

 

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Keywords: Starter | Number Patterns

"For the extension question... Which numbers have the same number of letters as their value? Top set year 11 also found 'positive fifteen'"

Mr Hamshaw-Hart, Beverley Grammar School
Tuesday, April 15, 2008

 

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Answers
 
... an even number with an odd number of letters?

2

 ... a square number with a prime number of letters?

1

 ... a cube number with a triangular number of letters?

1
... an odd number with an even number of letters?

5

 ... a prime number with a square number of letters?

5

 ... a triangular number with a cube number of letters?

66

 

Extension: Which numbers have the same number of letters as their value?

 

 

 

The answer to the extension is only 4.

What about other languages.

Students could search for the answer to this question on the Internet.
Let us know what you find!
Teacher, do your students have one to one access to computers?

Whether your students each have a TabletPC or share a desktop PC, this activity lends itself to eLearning (Engaged Learning).

Here's the URL which will take
students to a page which generates the sequences mentioned in this activity.
Can you make up some other questions like these? Let us know.

http://www.transum.org/go/?to=sequences