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OK Folks...so simple to follow , you just need to know/master your square/basic multiplication table from 1-9.


here we go

e.g

12^2 =(10*14) +2^2 =140+4=144

15^2=(10*20)+5^2= 200+25=225

16^2 =(10*22)+6^2 = 220+36 =256

17^2 = (10*24)+7^2 =240+49=289.


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56^2 = (50*62)+36= 3100+36=3136


...try too..

no much trick just follows a simple mathematical principle

say
X^2 =(x-d)(x+d) +d^2 .

=> (increase ) times (decrease ) plus square of the number used..

shekana...

saw it somewhere....guess its cool..

add yours.......still working on roots..



-shalom-

Cool, imma try it out ASAP!
But what determines the value of 'd'? Is it just any random number you choose?

This is quite encouraging . . But i can square 4 digit numbers offhand.

MDCEO1:
Cool, imma try it out ASAP!
But what determines the value of 'd'? Is it just any random number you choose?

not just any number .

now lets try this

4[b]4[/b]² =(40*48) +4² =1920+16 =1936

.. did you observe something .?.

mesoade:
This is quite encouraging . . But i can square 4 digit numbers offhand.

ok feel free to share your trick.

mesoade:
This is quite encouraging . . But i can square 4 digit numbers offhand.

you can square 4; hmmmm..you try sha....,
b4 you start jumping ooooo
I can square up to 6 digits( to give 12 digits..which exceeds calculator limit)!!!!
I tried it once...and I mesmerized those guyss!!!!!
BTW....I mostly stop in 5 digits cos of ( brain overwork)....if you do it alot, you'll know what I mean.....

Chairmen... I hail o

Thank God for calculator doh

MoyoGENERAL:
you can square 4; hmmmm..you try sha....,
b4 you start jumping ooooo
I can square up to 6 digits( to give 12 digits..which exceeds calculator limit)!!!!
I tried it once...and I mesmerized those guyss!!!!!
BTW....I mostly stop in 5 digits cos of ( brain overwork)....if you do it alot, you'll know what I mean.....

i really cant wait to see your trick ....

kindly share..biko...

MoyoGENERAL:
you can square 4; hmmmm..you try sha....,
b4 you start jumping ooooo
I can square up to 6 digits( to give 12 digits..which exceeds calculator limit)!!!!
I tried it once...and I mesmerized those guyss!!!!!
BTW....I mostly stop in 5 digits cos of ( brain overwork)....if you do it alot, you'll know what I mean.....

what encouraged me was a guy i met in a competition.

The guy can multiply,divide,square,cube,raise to any number,the guy knows the log and antilog of anynumber no matter how large it is(even number in billions sef smal 4 him),the guy knows the sin,cosine tan,tan^-1,sin^-1,cos^-1 of any number,he can even find d root or 13th root of 50th root(just name) it of anynumber,he once told me he can find the root of a hundred digit number. .

I wouldn't have believed what i'm telling you know if someone had told me,but i saw it with my korokoro eye.

There are many ppl dat can do multiplications nd divisions bt dis guy is the only one that can do all what i quondamly stated in the whole world and he is a nigerian

benbuks:
ok feel free to share your trick.

it's no new trick,

just the (a+b)^2=a^2+b^2+2ab . .

Now lets say we have a number like 49,

Now,u can split the number into any form u like,but the best is (40+9)

this wil giv,
(40^2+9^2)+2*40*9
=1600+81+720
=2401.

mesoade:
what encouraged me was a guy i met in a competition.

The guy can multiply,divide,square,cube,raise to any number,the guy knows the log and antilog of anynumber no matter how large it is(even number in billions sef smal 4 him),the guy knows the sin,cosine tan,tan^-1,sin^-1,cos^-1 of any number,he can even find d root or 13th root of 50th root(just name) it of anynumber,he once told me he can find the root of a hundred digit number. .

I wouldn't have believed what i'm telling you know if someone had told me,but i saw it with my korokoro eye.

There are many ppl dat can do multiplications nd divisions bt dis guy is the only one that can do all what i quondamly stated in the whole world and he is a nigerian

like seriously .? i believe its possible ..i bet such pple. will hardly tell u dia trick/secrets....hmmmm.....

mehn dats great.....


will really want to meet dat guy....

MDCEO1:
Cool, imma try it out ASAP!
But what determines the value of 'd'? Is it just any random number you choose?

yes,"d" can be any number you think would be easy for you

benbuks:
like seriously .? i believe its possible ..i bet such pple. will hardly tell u dia trick/secrets....hmmmm.....

mehn dats great.....


will really want to meet dat guy....

contrary to your thoughts,The guy was willing to teach us and we really wanted to learn because we were really fascinated(somebody that can raise a decimal number to a decimal power) but the determination wasn't there,i be like "how will i know all the cosines,sines,tangent,log,antilog,arcsin,arcos and arctan offhand" and thats it,i'd set a limit for myself and once u set a limit psychologically for ursef that it's impossible for you to achieve a feat in life,you will never achieve it.

The guy hasn't been brought into limelight cos the national mathematical centre(NMC) wants to harness the methods he uses and know it first,because if he's brought into limelight,america might come and want to woo him away with dollars.

He's currently writing a book on mental calculation(to b sponsored by FG)

mesoade:
what encouraged me was a guy i met in a competition.

The guy can multiply,divide,square,cube,raise to any number,the guy knows the log and antilog of anynumber no matter how large it is(even number in billions sef smal 4 him),the guy knows the sin,cosine tan,tan^-1,sin^-1,cos^-1 of any number,he can even find d root or 13th root of 50th root(just name) it of anynumber,he once told me he can find the root of a hundred digit number. .

I wouldn't have believed what i'm telling you know if someone had told me,but i saw it with my korokoro eye.

There are many ppl dat can do multiplications nd divisions bt dis guy is the only one that can do all what i quondamly stated in the whole world and he is a nigerian

wow....this is great!!!!!
men....if that's the case....I'm still learning.....
at first when I watched authur Benjamin's video of mental maths, I tot he was using magic, not until I began practicing, it became easy and interesting!!!!!
since then, I believe anyone can do it and even do more if you have the brain to accommodate numbers and swiftly do calculations)..
men kudos to that guy ooooo...

benbuks:
i really cant wait to see your trick ....

kindly share..biko...

main trick is (a+b)^2 =a^2+b^2+2*a*b
you must know other tricks too to aid your swift calculations...
learn tricks of 5square, 11times any number,....
and learn to do brain manipulations of numbers...( eg. 84^2= 80^2 plus 80*4*2 plus 4^2) to get 7056...this should only take you 5 secs....you can also use...84^2= 88*80+4^2= 7056....or even 100* 68+ 16^2= 7056....depending on the easiest, your brain switches automatically and follow that path!!!!!
asides, you must know a lot of squares off hand, to be a pro( it takes learning), this will help especially in large calculations....
...finally you must be able to keep numbers in your Brain( at least for 3.5 mins) and add them up without mixing lines!!!!!

Ben,thumbs up......i always respect u.....hmmmmmm.let me sit and watch ogas...wey dis guy oya get me a seat jare............i wish i could post some methods too but time permits me not,to solve sin,cos and their inverses is nt a prob,just need great determination and extra work........though i can't,,,.............let's play wit one 25^2=625 and 15^2=225.wit this.u can squar numbers which ends wit 5 less than 3sec.......5^2=25.then 1*(1+1)=2.join to give 225......for that of 25^2.....5^2=25...then 2*(2+1)=6.join to give 625,......45^2=2025,..........i wish i could explain better or do more,.........greetins to u al particularly master ben

MoyoGENERAL:
main trick is (a+b)^2 =a^2+b^2+2*a*b
you must know other tricks too to aid your swift calculations...
learn tricks of 5square, 11times any number,....
and learn to do brain manipulations of numbers...( eg. 84^2= 80^2 plus 80*4*2 plus 4^2) to get 7056...this should only take you 5 secs....you can also use...84^2= 88*80+4^2= 7056....or even 100* 68+ 16^2= 7056....depending on the easiest, your brain switches automatically and follow that path!!!!!
asides, you must know a lot of squares off hand, to be a pro( it takes learning), this will help especially in large calculations....
...finally you must be able to keep numbers in your Brain( at least for 3.5 mins) and add them up without mixing lines!!!!!

.

ok nice one bro......i actually min ur trick 4 squaring 3,4 ,5 & 6 digit numbers. .....

Calculusfx:
Ben,thumbs up......i always respect u.....hmmmmmm.let me sit and watch ogas...wey dis guy oya get me a seat jare............i wish i could post some methods too but time permits me not,to solve sin,cos and their inverses is nt a prob,just need great determination and extra work........though i can't,,,.............let's play wit one 25^2=625 and 15^2=225.wit this.u can squar numbers which ends wit 5 less than 3sec.......5^2=25.then 1*(1+1)=2.join to give 225......for that of 25^2.....5^2=25...then 2*(2+1)=6.join to give 625,......45^2=2025,..........i wish i could explain better or do more,.........greetins to u al particularly master ben

.



hmmm. c boss dey wyn ehn boy......daris God ooo.....nice trick dia bro.......

hudy.? its bin a while.

Una get time ooo