Here are three 'tricks' to amaze your friends. But the really
clever trick is explaining to them why these 'tricks' are maths
not magic. Like all good magicians, you should practice by
trying. . . . Write down a three-digit number Change the order
of the digits to get a different number Find the difference
between the two three digit numbers Follow the rest of the
instructions then try. . . . Pick the number of times a week
that you eat chocolate. This number must be more than one but
less than ten. Multiply this number by 2. Add 5 (for Sunday).
Multiply by 50... Can you explain why it. . . . Replace each
letter with a digit to make this addition correct. Which set of
numbers that add to 10 have the largest product? Choose any
three by three square of dates on a calendar page. Circle any
number on the top row, put a line through the other numbers that
are in the same row and column as your circled number. Repeat. .
. . Liam's house has a staircase with 12 steps. He can go down
the steps one at a time or two a