An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Find a great variety of ways of asking questions which make 8.
Choose any three by three square of dates on a calendar page...
The problem was "What is the sum of all the
digits in all the integers from one to one million?" and it was not
intended to be a long hard grind doing lots of adding up.
The very first solution of the month came from
Joshua from Russell Lower school in Ampthill, Beds. He took three
days to come up with a solution done the hard way. His method was
well thought out, and very clearly explained, and his answer was so
nearly correct that we even suspected a typo in the answer he gave.
No-one else sent in an answer as close as Joshua's.