
NUMBER MAGIC Believe it or not, numbers can be fun and intriguing. The following examples of some number games are a good way to get children interested in arithmetic and these are just the tip of the iceberg. Here are a few examples  Sum of Human Knowledge (contributed by Eric Bishop) If you multiply the number 142,857 by anything between 1 and 6 the answer contains the same digits. e.g. 142857 x 3 = 428571 and 142857 x 6 = 857142 If you multiply the same figure by 7 the answer is 999,999.
Challenge 1 Add up the following numbers out loud, starting at the top and, adding on each number as you go 
If you made the answer 5,000 (as 99% of people do) then try again! Challenge 2 A game to find out a person's age and how many coins they are carrying.
This works unless they are carrying over 100 loose coins. Example  25 x 2 = 50 + 5 = 55 x 50 = 2750 + 6 = 2756 2756  250 = 2506 Challenge 3 Take any three digit number in which the first and last number differ by more than one i.e. 335 would be O.K. but not 333, or 332. Reverse this number Subtract the smaller number from the larger. Add this answer to the same number reversed and the answer is ALWAYS 1089. Example 1:
Example 2:
Challenge 4 Get a friend to throw a dice three times and you will be able to tell them which numbers came up and in which order. This is what they have to do 
Ask for the final total. Subtract 250 and you will be left with three figures. These figures represent the numbers thrown and the in which they appeared. Example:
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