Ms Tayke

Twenty three again?

Happy Birthday Ms Tayke!

Ms Tayke

Ms Tayke does not want anyone to know how old she is. We think she is 559 but she often subtracts 23 from her age to make her feel younger.
How many times can you subtract 23 from 559?

Time left four minutes.

No calculators allowed.


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Topics: Starter | Arithmetic

  • 9AM, Southam College
  •  
  • You can only subtract the initial number once, because after that you are subtract that number from a different number.
  • Transum,
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  • Well done 9AM, Southam College! Good answer. There are more smart answers to this question lower down this page. The countdown clock above is a distractor, it leads the pupils to think that they are being asked to do a time consuming activity whereas the most efficient strategy would be to a mathematical operation not mentioned in the question at all.

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Answers

Pupil 1: "I subtracted 23 from 559 three hundred times ... but I got the answer 536 every time!"

Teacher: "That's correct, but everyone else in the class will have divided 559 by 23 and given the whole number part of the answer which is 24"

Pupil 2: "I think the answer is infinite as you can subtract 23 as many times as you like as long as you understand negative numbers!"

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