Halve It

Start with 100.

Halve it to get 50

Halve it to get 25

Continue as far as possible.

No Calculators

[Decimal fractions are allowed]

You have

A Mathematics Lesson Starter Of The Day

Topics: Starter | Arithmetic

  • Transum,
  • A challenge for the more able who volunteer... two students stand at the front of the class with their back to the screen (which is showing the answers below and which the rest of the class can see). The first volunteer says 100. The second halves that and says the answer. The first halves the second's number and so on. The winner is the one who can last the longest without making a mistake.

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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 division quiz.


Student Activity



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