Puzzle 1: Arrange the given digits to make three 3 digit numbers such that the second is double the first and the third is three times the first. 4 digits have been positioned already.
×2=
×3=
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Puzzle 1: Arrange the given digits to make three 3 digit numbers such that the second is double the first and the third is three times the first. 4 digits have been positioned already.
1
2
3
4
5
6
7
8
9
Double Treble is based on a puzzle called Digital Multiplication described in the book Hoard of Mathematical Treasures by Ian Stewart. There are many other puzzles similar to this to be found on the Maths Puzzles page. |
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Transum.orgThis web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available. Please contact me if you have any suggestions or questions.
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Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician? Comment recorded on the 1 August 'Starter of the Day' page by Peter Wright, St Joseph's College: "Love using the Starter of the Day activities to get the students into Maths mode at the beginning of a lesson. Lots of interesting discussions and questions have arisen out of the activities. Comment recorded on the 28 May 'Starter of the Day' page by L Smith, Colwyn Bay: "An absolutely brilliant resource. Only recently been discovered but is used daily with all my classes. It is particularly useful when things can be saved for further use. Thank you!" |
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Featured Activity23 or Bust A game involving mental arithmetic and strategy for two players or one player against the computer. It is possible to beat the computer but you need a well thought out strategy. |
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Go MathsLearning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths main page links to more activities designed for students in upper Secondary/High school. | |||||
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