How many Alphanumbetical numbers can you find? These are numbers which when written as words have all their letters in alphabetical order.

Letter A

A Mathematics Lesson Starter Of The Day




Topics: Starter | Puzzles | Vocabulary

  • Mr Hamshaw-Hart, Beverley Grammar School
  • Alphanumbetical words.
    First, effort.
  • Class 1GS2, The Gordon Schools
  • We found 'forty'.
  • Jenny Meckiffe, Herne Junior School
  • Thank you for this! I have used selective ones with my year four class and they have really enjoyed the challenge. We oarticularly liked Friday's one, finding the closest number sentence for 2008, great!
  • Nick Peters, Uplands Junior School
  • Taking things to a cross curricular level, in French we could have deux, cinq or dix ?
  • YR 8, Alcester High School
  • Also ein and dos as other languages.
  • Mr Kavanagh's Fifth Class, Cork, Ireland
  • We found forty. In Irish we found the word dó which means two.
  • 8n3, St George's Academy Sleaford
  • We also found 'acht'.
  • Zak Taibi, Cavendish Road State High School
  • We found forty.
  • Miss S, SSPP
  • We found 10. Thank you!
  • Transum,
  • The number 8549176320 is special as it contains all of the digits in alphabetical order.

    For more cool facts like that see the Maths Trivia page.
  • Cecilia Calvo Pesce, Twitter
  • Transum,
  • 206 is the smallest number that when written in words contains all five vowels exactly once:


How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
Click here to enter your comments.

If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:

Excellent, I would like to see more like this
Good, achieved the results I required
Didn't really capture the interest of the students
Not for me! I wouldn't use this type of activity.

This starter has scored a mean of 3.0 out of 5 based on 352 votes.

Previous Day | This starter is for 7 June | Next Day



There is only one number:


Can you find any other alphanumbetical mathematical words?

Letter A

Here are some alphanumbetical mathematical words: add, foot, loss. Can you think of any more?




Zero comes last if all the numbers are arranged alphabetically. What number would come first?

Online Maths Shop

Laptops In Lessons

Teacher, do your students have access to computers?
Do they have iPads or Laptops in Lessons?

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

Laptops In Lessons

Here a concise URL for a version of this page without the comments.

Here is the URL which will take them to a related student activity.

Student Activity

Your access to the majority of the Transum resources continues to be free but you can help support the continued growth of the website by doing your Amazon shopping using the links on this page. Below is an Amazon search box and some items chosen and recommended by Transum Mathematics to get you started.


Hello World

You are buying a (driverless) car. One vehicle is programmed to save as many lives as possible in a collision. Another promises to prioritize the lives of its passengers. Which do you choose?

Welcome to the age of the algorithm, the story of a not-too-distant future where machines rule supreme, making important decisions – in healthcare, transport, finance, security, what we watch, where we go even who we send to prison. So how much should we rely on them? What kind of future do we want?

Hannah Fry takes us on a tour of the good, the bad and the downright ugly of the algorithms that surround us. In Hello World she lifts the lid on their inner workings, demonstrates their power, exposes their limitations, and examines whether they really are an improvement on the humans they are replacing. more...

Extension Answer


If you enjoyed this type of number puzzle you might like to look at the June 2016 Transum Newsletter which featured a similar challenge as the puzzle of the month.


©1997-2019 WWW.TRANSUM.ORG