Train of thought

10th January 2003 at 00:00
Mental maths warm-ups from Mr Numbervator

This puzzle is a great way of helping pupils to remember two of the times tables. It follows the concept of consecutive numbers and helps young people remember specific multiplications.

12 = 3 x 4

All four digits follow on consecutively. Can you think of another calculation where the answer and the following calculation are all consecutive numbers?

56 = 7 x 8

So we now have 1, 2, 3, 4, 5, 6, 7, 8 which are all consecutive numbers and help us remember particular times tables. To extend the more able child, pose the following question: "Can you think of a division calculation where all four digits are consecutive numbers?"

12 .-. 3 = 4

56 .-. 7 = 8

There are more calculations like these, where all the digits are consecutive numbers. This is a lovely investigation to set to a class or group or even for homework. It can get parents involved and bridge the gap between home and school.

Mr Numbervator, aka Isaac Anoom, is a consultant and teacher at Donnington Primary School in London

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