Sun Apple

Drag the numbers onto the grid so that the sum of the four numbers around a circle add up to the total given in the circle.


Well done. You have solved this puzzle. Try one of the other similar puzzles waiting to be solved.


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Clear New Puzzle Check

A Mathematics Lesson Starter Of The Day

Topics: Starter | Mental Methods | Problem Solving | Puzzles

  • Transum,
  • Clicking on the 'New Puzzle' button above with take you to a version of this puzzle with more options. You will be able to choose how many numbers are already placed on the grid by using clue buttons. There is also the option to try Sujiko which does not have the colour area totals.

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 25 August | Next Day



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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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Laptops In Lessons

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:

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

Laptops In Lessons

Here is the URL which will take them to a self-checking, interactive version of this puzzle.

Student Activity


Suko and Sujiko were developed by Kobayaashi Studios and permission to use the idea here has been kindly granted by their syndication agents,


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