Homeschool: Zen School! Taoist Vedic Math Tricks. How to square numbers Ages: 4-73
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February 26th, 2009 at 3:40 am
um yeah? thats what the world consists of…patterns
its good u figured this one out.
March 9th, 2009 at 10:19 am
for all squared numbers x, consider *only* the last 2 digits dd. There seems to be a pattern for all dd((x+1)^2) – dd(x^2)… (works also when only considering the 2 digits in the middle) Would be interesting to do some tests with a bigger sample of numbers
March 14th, 2009 at 11:54 pm
what is the connection between taoism and vedic math??
March 17th, 2009 at 12:59 am
Taoist were scholars. They are very intellectual. I think there was something close to math that they used… but I don’t know what. ^^
March 20th, 2009 at 5:26 am
when there is an individual pattern for every class of number, it is not a pattern anymore!
March 21st, 2009 at 4:29 pm
chicken, there is only one pattern this series. There are permutations to the pattern but only one pattern
April 5th, 2009 at 10:36 pm
nice! I could do it now!
April 17th, 2009 at 4:32 pm
kewl dewd
June 21st, 2009 at 6:50 pm
Wow, that is awesome! Even a math dunce like myself got it!
June 27th, 2009 at 1:35 am
yeah, math was pretty important because it is universal
July 16th, 2009 at 4:41 pm
math is fun!
August 1st, 2009 at 5:22 pm
Right……I was a bit disapointed…..thought maybe this would be a cool way to teach kids….Sure you can find little patterns like this in things….but if it only works on a certain number of numbers then you come to the point where it becomes unpracticle (You can find such patterns for other numbers…but it would be harder trying to remember all these little patterns & tricks than to just do the math as normal LOL)
November 7th, 2009 at 9:56 am
True but thats because you have been taught maths the ‘normal’ way. If you learn these patterns, you can apply to all the different sections of math. =)
November 13th, 2009 at 11:10 pm
interesting got any tricks for algebra
November 15th, 2009 at 8:11 pm
Why weren’t we taught this in school hahaha YOUR AWESOME DUDE
November 26th, 2009 at 6:49 am
did he say cube numbers? This looks squared, or did I miss something.
December 13th, 2009 at 12:16 am
If you can recall the pattern in seconds as opposed to the time it would take you to learn it, it would be worth it. If this applied for every 3 digit number that starts with a 1, this would be worth learning.
I guess the real point though is that this derives itself from common logic, things that you should learn. Magic doesn’t suit well if you have to learn by rote, rote doesn’t help anyone. Learning little quirks, and discovery is how you properly learn.
December 16th, 2009 at 7:03 pm
I paused it to see if I could get it before he told me…
Got it. But didn’t get the “Why does it work”
December 22nd, 2009 at 10:12 pm
im gunna be all paranoid with patterns now haha
January 5th, 2010 at 7:35 pm
i dun get it… how is 9 in the place of 100’s
January 16th, 2010 at 8:45 pm
watch this sweet trick for squaring numbers, idk who came up with it but if no one did before me, then im the first! (credit to whoever did IF its been done before)
observe: to find the value of x^2 without a calculator use this method: let x be 23. as long as you know the value of a number^2 previous of x you can use this to find x^2. so – 20^2 = 400. 21^2 = 400 + 20 + 21. 21^2 = 441. 22^2 = 441 + 21 + 22. 22^2 = 484. 23^2 = 484 + 22 + 23. 23^2 = 529
January 20th, 2010 at 12:57 pm
pls dont be a teacher
February 10th, 2010 at 1:32 am
yeah thats how to square them not cube them
April 18th, 2010 at 12:20 am
To REALLY understand why this works:
109^2
= (100+9) x (100+9)
= 100^2 + 900 + 900 + 9^2 (by using FOIL)
= 10000 + 1800 + 81
= 11881
ie (100+x)^2 = 100^2 + 200x + x^2
Not terribly useful math example, but neat and interesting analogy.
June 13th, 2010 at 4:40 am
freelancedruma, what that u are doing is not first time,and not unique, it is simply (x+1)^2 = x^2+1+2x= x^2+(x+1) +x example 21^2=(20+1)^2 = 20^2 +21+20=441. but you are very genius that you just find it and make really stress on it.