How Do You Do?


Highlight three numbers from those above that add up to 129.

A Mathematics Lesson Starter Of The Day


Topics: Starter | Arithmetic | Place Value | Problem Solving | Puzzles

  • Transum,
  • Once pupils have understood the rules of combining digits in this puzzle the next step is to develop some strategies. Click on the button lower down this page to generate another version of this puzzle from random numbers. Even armed with a calculator and paper many pupils will opt for a mental method to home in on the correct answer.
  • Mrs Limestone,
  • Can you also subtract?

    [Transum: No, addition only. The answer can be seen by teachers lower down this page.]
  • 4G, Epping West
  • My class says this is impossible to solve! Thank you.
  • Amy Brookman, Cambridge
  • This isn't possible?

    [Transum: You'll be surprised Amy. The answer can be seen by teachers lower down this page.]
  • Roger, Stoke College
  • Clue - not all numbers are single digit.

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This starter has scored a mean of 3.2 out of 5 based on 124 votes.

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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

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