No Partner

26, 27, 36, 16, 40, 14, 47,
9, 23, 7, 54, 48, 49, 4,
43, 37, 20, 2, 28, 61, 35.

Most of the numbers in the list above can be added to another number in the list to give a sum of 63. Which numbers do not have a partner?

A Mathematics Lesson Starter Of The Day


Topics: Starter | Arithmetic | Mental Methods | Number

  • Transum,
  • A quick starter based on a simple mathematical process but good to get students engaged at the beginning of the lesson. Don't forget you can refresh this page to get another version of this starter. You could even use this starter for every Maths lesson in a week to see if strategies are developed and speed increases!
  • Priyanshi.solanki, Darcy Road Public School
  • I love the transum games, the starter of the day and all the fun stuff.

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 3.1 out of 5 based on 70 votes.

Previous Day | This starter is for 30 August | Next Day



Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.

Note that you can click on a number to partially hide it. Click it again to show it. This is useful to eliminate all of the pairs to leave only the numbers with no partner showing. The pupil version of this activity is even more interactive. The link is lower down this page.

Casio Classwiz Calculator

There is currently a lot of talk about this new calculator being the best in its price range for use in the Maths classroom. The new ClassWiz features a high-resolution display making it easier to view numerical formulas and symbols but it isn't a graphical calculator as such (it has the capacity to draw graphs on your smart phone or tablet, via a scannable QR code and an app).

As well as basic spreadsheet mode and an equation solving feature you also get the ability to solve quadratic, cubic or quartic polynomial inequalities and the answer is given just as it should be written down, using the correct inequality symbols!

This calculator has a high-performance processor and twice the memory of previous models ensuring speedy operation and superior computational power.more...

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 student version of this activity.

Student Activity



©1997-2017 WWW.TRANSUM.ORG