Friday, November 8, 2013

Greg Tang Game

Several years ago, I heard a math author, yes, a math author, speak at a conference.  Greg Tang has written books such as The Grapes of Math, Math Appeal, and Math Fables.  He was a whole lot of fun and taught us a simple little game that I have passed on to the students.  It is complicated to explain, but as the children now understand it, I have no doubt, they can explain it to you!

The idea is that you can take any five numbers to create another number and it always works - except if you used all 1s.

Take these numbers for example:
7
5   3   2   9   4

Use the numbers on the bottom to create the 7. You can add, multiply, subtract or divide. You must use all five numbers and any numbers you create. If you do it right, you will end up with four equations and chances are there are a wide variety of ways you can solve the problem.  Here is one example:

2 + 9 = 11
11 + 4 = 15
15 - 5 = 10
10 - 3 = 7

Use any single digit numbers to create your own game!  See who in your house can find the most solutions!  Good luck!

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