# A Maths Starter of The Day

Which group of four numbers, arranged in a square, has the largest total?

 A B C D E F G H I J 1 2 1 2 3 3 3 5 1 3 5 2 3 1 4 1 3 1 3 5 1 1 3 2 2 5 4 2 1 5 1 3 3 4 2 3 1 3 5 4 1 5 3 2 5 3 5 5 2 4 2 4 1 4 3 6 3 1 2 1 1 4 4 2 3 2

Which group of four numbers, arranged in a square, has the smallest total?

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Topics: Starter | Arithmetic | Mental Methods

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• Without using pen and paper, completely relying on your mental abilities, how would you, as a teacher, work on this challenge? There are buttons below to change the range of numbers used in the grid. Does your strategy work for larger numbers too? This type of mental exercise builds abilities to cope with multi-step mathematical solutions required for more complex problems.

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Previous Day | This starter is for 3 July | Next Day

### Change Numbers

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.

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 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).

Transum.org/go/?Start=July3

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

Transum.org/go/?to=DaNumber

## Curriculum Reference

See the National Curriculum page for links to related online activities and resources.

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