Upside Number

Starter of The Day Transum Mathematics Topics

Sue Mainstone, Sir Charles Lucas arts college
Should have said todays number was planindromic as well
Micky Bullock, Harrogate
Another solution is 0816336180.
Miss Gilleece, Boldon School
My 9A1 got the answer in 3.2 minutes, Chris was the first to come up with the correct answer.......which is quite amazing considering!!!
Mrh, Neb
I had a student had completed this in less than two minutes! Can anyone beat that!
Jay, Yeates
Micky, your answer is wrong as it isn't the same when read upside down.
Cheryl Joinson, Sychdyn School
I'm using starter of the day every mornign in my primary class.
Our answer was ☆☆☆☆☆☆☆☆☆☆ but we have no way of checking if we are correct.
Geraint White, Hadleigh High School
I got 0819116180.
Fran,
Another soloution is 0816699180.
Cheryl, Sychdyn Primary School
Geraint & Fran sorry but both your answers are wrong - the corect answer is at the bottom of this page - and my primary school class got it right! :-).
Sally S, Barham School
Love reading the comments - sometimes V competitive between teachers themselves;).
Mr. Dean, Varee International
What about 0810000180?
5DC, Lee On The Solent Junior School
We think the answer is ☆☆☆☆☆☆☆☆☆☆ :).
Top Group Y5, ST JOHN'S SCHOOL
The boys loved this.
Mr P Darch, FMS - Tom, Luke And Lucy
Enjoyed this and my Year 6 class solved in about 4 minutes.
By the way the only answer is ☆☆☆☆☆☆☆☆☆☆ - the others either do not look the same upside down or do not satisfy the other rules.
Mr Staples, Otamatea High School
My students enjoyed this and some found it quite easy Two boys completed in 2 minutes.
Year 8D, Gresham's Prep School
We did this as a team
☆☆☆☆☆☆☆☆☆☆
Forgot to time ourselves - will challenge you all next week!

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.

Previous Day | This starter is for 8 March | Next Day

Answers are available to teachers, tutors and parents.
Sign In or Create an Account

A Transum subscription also gives you access to the Class Admin student management system, downloadable worksheets, many more teaching resources and opens up ad-free access to the Transum website for you and your pupils.

Can you make up some clues for your own phone number?

Extension

Can you write down a valid mathematical operation that is also true when viewed upside down?

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 link. As an Amazon Associate I earn a small amount from qualifying purchases which helps pay for the upkeep of this website.

Educational Technology on Amazon

Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments:

Transum.org/go/?Start=March8

However it would be better to assign one of the student interactive activities below.

Laptops In Lessons

Transum.org/go/?to=square

A Mathematics Lesson Starter Of The Day

Extension