don steward
mathematics teaching 10 ~ 16

Saturday 22 December 2012

reduction multiplication

some other questions:
  • what is the largest number with an odd number root? 
  • what is the common property of numbers that give an odd number root and why
  • how nany numbers are there with an odd root?
  • what happens to numbers with a 5 in them?
  • by working backwards, find all of the 33 numbers that have a root of 5
this task is presented as 'Fossils' in 1000 problems (thanks to Puntmat for locating this for me - I had forgotten)

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