Comments on: Fractured Memories http://www.discreteideas.com/2010/07/fraction-memorization/ Thoughts count Mon, 05 Dec 2011 22:48:50 +0000 hourly 1 http://wordpress.org/?v=3.1.3 By: The Count http://www.discreteideas.com/2010/07/fraction-memorization/comment-page-1/#comment-425 The Count Thu, 21 Apr 2011 05:16:03 +0000 http://www.discreteideas.com/?p=306#comment-425 @Neil, Right you are! Fixing now. @Neil,

Right you are! Fixing now.

]]> By: Neil http://www.discreteideas.com/2010/07/fraction-memorization/comment-page-1/#comment-424 Neil Thu, 21 Apr 2011 04:34:47 +0000 http://www.discreteideas.com/?p=306#comment-424 Some pretty nice shortcuts; I'll have to remeber these. Just one little nitpick, a typo. In the '1/12' description, you forgot a zero in the second sentence. I also like the idea of using brackets for repeating digits. Cheers :) Some pretty nice shortcuts; I’ll have to remeber these. Just one little nitpick, a typo. In the ’1/12′ description, you forgot a zero in the second sentence.

I also like the idea of using brackets for repeating digits.

Cheers :)

]]> By: Sipstaff http://www.discreteideas.com/2010/07/fraction-memorization/comment-page-1/#comment-394 Sipstaff Tue, 29 Mar 2011 18:12:21 +0000 http://www.discreteideas.com/?p=306#comment-394 Fractions of 7 is also very interesting if you look at the pattern they form on a calculator keypad (or your normal keyboard numpad) All you have to do is to memorize the pattern and know where to start for each of the 6 fractions, which is easy since every next fraction starts with the next bigger number. Fractions of 7 is also very interesting if you look at the pattern they form on a calculator keypad (or your normal keyboard numpad)
All you have to do is to memorize the pattern and know where to start for each of the 6 fractions, which is easy since every next fraction starts with the next bigger number.

]]> By: The Count http://www.discreteideas.com/2010/07/fraction-memorization/comment-page-1/#comment-66 The Count Sun, 18 Jul 2010 21:52:24 +0000 http://www.discreteideas.com/?p=306#comment-66 I like it, put a star after the brackets and you've got the regular expression (betraying my programming background). We were thinking along the same lines, but your brackets are more exact since 0.16* isn't as precise as 0.1[6] I like it, put a star after the brackets and you’ve got the regular expression (betraying my programming background). We were thinking along the same lines, but your brackets are more exact since 0.16* isn’t as precise as 0.1[6]

]]> By: Joe http://www.discreteideas.com/2010/07/fraction-memorization/comment-page-1/#comment-65 Joe Sun, 18 Jul 2010 21:39:59 +0000 http://www.discreteideas.com/?p=306#comment-65 Instead of an overbar to signify repetition, how about something like :|| in imitation of the repeat-sign in sheet music? 1/3 = 0.3:|| 1/6 = 0.1||:6:|| 1/7 = 0.||:142857:|| A bit clunky, and the vertical line looks too much like the numeral 1. So how about just putting the repeating part in brackets the way chemists symbolize repeated parts of polymer molecules (e.g. <a>http://en.wikipedia.org/wiki/Polyvinylchloride#Preparation</a>)? 1/3 = 0.[3] 1/6 = 0.1[6] 1/7 = 0.[142857] Instead of an overbar to signify repetition, how about something like

:| |

in imitation of the repeat-sign in sheet music?

1/3 = 0.3:||

1/6 = 0.1||:6:||

1/7 = 0.||:142857:||

A bit clunky, and the vertical line looks too much like the numeral 1.

So how about just putting the repeating part in brackets the way chemists symbolize repeated parts of polymer molecules (e.g. http://en.wikipedia.org/wiki/Polyvinylchloride#Preparation)?

1/3 = 0.[3]

1/6 = 0.1[6]

1/7 = 0.[142857]

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