Math is Cool!

On Saturday some of our Math Olympiad participants competed at the Middlesex Math Madness Tournament sponsored by Memorial School teachers Valerie Burns, Tara Olshaw, and Rose Magliozzi.  It was an exciting and well organized event. Students completed 10 problems in the individual competition, and then worked as a team to solve ten more problems.  A sample problem is below so you can try it for yourself.  (Ask if you want the answer!)

 I am so proud of our fifth graders: LiAm W., Matt T., Jane R. and Thiviyan S. and fourth grader Ronak G.

Here's one of the problems our challengers had to solve:

The numerator of a fraction contains two of the numbers 2, 3, 5 ,7 and 9., which are added, subtracted, or multiplied.  The denominator contains two of the other numbers and they are added, subtracted or multiplied.  What is the greatest possible value of the fraction?