Difference between revisions of "Activities/Abacus/Worksheet/Answersheet"

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Is this all of the possibilities?
 
Is this all of the possibilities?
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See Diophantine equations, computer programs [http://tonyforster.blogspot.com/2010/09/turtle-diophantine.html including ones written in TurtleArt] can find all the solutions by trial and error.

Revision as of 00:29, 5 April 2011

Answers to the Abacus Worksheet

Ways to make 1/2 just using one string

Abacus1of2.jpgAbacus2of4.jpg Abacus3of6.jpg Abacus4of8.jpg Abacus5of10.jpg Abacus6of12.jpg

To make 1/2 just using one string, the fraction denominator must be divisible by 2. The string must contain an even number of beads, 2 4 6 8 10 12


Ways to make 1/2 with more than one string

1/3 + 1/6

1/3 + 2/12

1/4 + 1/6 + 1/12

1/4 + 2/8

1/4 + 3/12


Is this all of the possibilities?

See Diophantine equations, computer programs including ones written in TurtleArt can find all the solutions by trial and error.