1. Arrange the digits from 1 to 9 in alphabetical order.
2. Memorise the large number you have created.
3. Close your eyes, can you remember it?
4. How many times can you halve this number (without a calculator) to give a whole number answer?
Topics: Starter | Arithmetic | Number
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What are the prime factors of this large alphabetical number?
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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.
Here is the URL which will take them to an activity about recognising prime numbers.