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## Saturday, October 1, 2011

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Interesting Number Puzzle, but I'm Stuck

## Playing with Math - the Book

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Head on over to Think Again, for Jan's latest puzzle. No one's been commenting, and I'm curious what other people think of this.

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- Sue VanHattum
- Richmond, CA, United States
- Math Mama is Sue VanHattum, a community college math teacher interested in all levels of math learning, and the mama of a teenage son. I entered the blogging world as I began work on Playing with Math: Stories from Math Circles, Homeschoolers, and Passionate Teachers. Contact me at mathanthologyeditor on gmail etc.

Good morning and Happy October!

ReplyDeleteI’ve nominated you/your blog for The Versatile Blogger Award! :) Share seven things about yourself and pass the award along to the most versatile blogs you follow. Follow the link below for details.

Thanks for blogging!! Your blog makes me a better teacher and learner!

Cindy

love2learn2day

http://love2learn2day.blogspot.com/2011/10/versatile-blogger-award.html

This is a classic puzzle! I have some stuff I've used it along with at various times, so send me an email if you want to see those handouts and maybe get some ideas.

ReplyDeleteI'm trying to think of how to give hints without spoiling things too much. Maybe a small one would be to focus more on thinking about the powers of 10 and relating them to the number you are working with, instead of focusing on your number and relating it to the powers of 10.

Thank you, Cindy! I saw your mention of my blog (at the top of your in-no-particular-order list) just before I saw this. I'll see if I can accept it (composing a list of 15 special blogs will take me a while).

ReplyDeleteThank you, Josh! I was pretty sure my first approach was a dead end, but haven't moved on yet. I'm just going to let it percolate for a while, and hopefully come back to it later.

Cool! I had not seen this particular puzzle before, although I've seen similar things in the past. I'm quite confident that a brute-force approach will NOT help, as the solution I found for 2011 has quite a few digits...

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