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'Thousands and Millions' printed from http://nrich.maths.org/
Try a few of these:
Do human beings live for as long as a million hours?
If you have been alive for a million seconds, how many birthdays
have you had?
What year was it one billion minutes ago?
How long would it take to count to a million?
Suppose you were worth your weight in £1 coins. How much
would you be worth?
Could you fit the population of London into one hundred thousand double-decker
Could you run one thousand
metres in one minute?
Could you eat exactly one
tonne of food in a year without getting either very thin or
Could you walk as much as one
hundred thousand miles during your lifetime?
Could one thousand drink
cans fit into one cubic metre?
The questions are taken from Tony Gardiner's Maths Challenge, Book
1, Oxford University Press 2000.