World Class Math Instruction Your Children Will Love!
Here are solutions to Puzzle Contest #5.
Rules of Contests
We offer 5-6 contests per year. Each contest is graded individually, and then at the end of the
Winners are selected by grade level (i.e. there are separate winners from grade 2 and grade 3 even though they are offered the same contest).
It is important that contestants show their solutions. A correct answer without an explanation is awarded 50% of the possible points. Only a correct answer with correct explanation will lead to a 100% score. Partial explanations result in partial scores.
Note: only MWSM students and their relatives are eligible for the prizes – although of course, everyone is welcome to send solutions.
About Our Own Puzzle Contests
Puzzles help train out-of-the-box thinking and keep up interest in math. They frequently tie together many unrelated things children learn in the regular program, and most certainly they train logic.
We also offer puzzles to parents, grandparents, aunts
Our Puzzle Contests are now in their 9th year and growing. Join us and enjoy!
Our puzzles come from a variety of sources – old books, old memories, old and new friends – and many of our own making.
We always welcome new additions – so if you know of good ones – please send them our way to firstname.lastname@example.org
"They have not only challenged our kids but also taught them to love math and most importantly taught them not to be afraid of math. We find they do a good job with fundamentals and then build on it to teach them problem-solving skills. We give RSM 5 stars!!!”
- Sheela Krishnamony
"All three of my boys have studied at the Russian School of Math and it has helped them to understand advanced concepts as well as prepare for taking both standardized tests as well as general school testing. It requires a high level of dedication from the child and parents, but it is worth it."
– Laura Beusch
"At first, I did not realize the huge benefit that I was receiving to my math education and would complain about homework, class, etc. Now, I see how Russian Math has helped me succeed with math in and out of school."
– Arina Khotimsky (former student, MIT freshman 2019)