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Easy Way To Find The Square Of Number Between 1-100 By Heart - Education (3) - Nairaland

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Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Nobody: 7:05am On Jul 24, 2014
check this out too.


www.nairaland.com/1790583/math-genius-calculations-without-calculator
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Nobody: 7:16am On Jul 24, 2014
shoturtrap: Ok here's this one.
Any two digit number multiplied by 11 just add the number and put it in between the original numbers if ur answer is a two digit number add the first number to the original first digit. Example

25 x 11 = 2 (2+5) 5= 275
32 x 11 = 3 (3+2) 2= 352
86 x 11 = 8 (8+6) 6= 8(14)6
Add first number of the answer to the original first digit
= 946
79 x 11 = 7 (7+9) 9= 7(16)9= 869.
10 x 11 = 1 (1+0) 0= 110

So that's one short or simple way I used back then in the primary school to quickly solve maths problems involving the 11 multiplication table.

nice one bro.....

could also be done thus ..


11 *1 = 10+1=11

11*2=20+2=22

11*3=30 +3=33

.

.

.11*325 = 3250+325 =3575

' & so on
hence
=> 11*n = n'0' +n

that's it
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by bandol(m): 7:29am On Jul 24, 2014
fxjones: hello fellow mathemacians,
just discover this while manipulating numbers, in class

how you quickly find the square of numbers without lifting a finger.

eg find the square of 15?

u can quickly do this without using calc or writing down

just say: 1*1+1 = 2
then find 5*5 = 25
lastly combine them together = 225

example 2

find the square of 25
again: 2*2+2 =6
then 5*5 again = 25
join them together = 625


example 3:

find the square of 75

again you say 7*7+7 = 56
and 5*5 = 25
finally join them together as we did before = 5625

this formula only work for numbers between 1-100 and the last number must end with 5

I will post the formula for other range: keep rocking!
Going by your formula, square of 10 and 11 would be:
10=
1*1+1=2
0*0=0
Puting it together we have 20 which is wrong
For 11 square
1*1+1=2
1*1=1
That is 21 wrong too

For 12 square
1*1+1=2
2*2=4
We hav 24 which is wrong again.
Can u justify this.
...U shouldn't have said for number 1-100, u would have said for some selected numbers endind in 5. D title is confusing. I just saw d note at †ђξ end of †ђξ post.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by ocmorale: 7:42am On Jul 24, 2014
fxjones: hello fellow mathemacians,
just discover this while manipulating numbers, in class

how you quickly find the square of numbers without lifting a finger.

eg find the square of 15?

u can quickly do this without using calc or writing down

just say: 1*1+1 = 2
then find 5*5 = 25
lastly combine them together = 225

example 2

find the square of 25
again: 2*2+2 =6
then 5*5 again = 25
join them together = 625


example 3:

find the square of 75

again you say 7*7+7 = 56
and 5*5 = 25
finally join them together as we did before = 5625

this formula only work for numbers between 1-100 and the last number must end with 5

I will post the formula for other range: keep rocking!
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Franky9584(m): 8:35am On Jul 24, 2014
I tink u gv us d sqroot of nos dat end wit 5. If not, plz help me get sqroot of 34. . . .am waiting
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Drive512(m): 8:47am On Jul 24, 2014
This is no new stuff nah, its called Vedic Mathematics mostly practiced in India. you can as well google it for yourself and blow your mind.
And if you want to be a GMAT Math Guru this is for you...................Enjoy
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by emmabest2000(m): 9:09am On Jul 24, 2014
fxjones: hello fellow mathemacians,
just discover this while manipulating numbers, in class

how you quickly find the square of numbers without lifting a finger.

eg find the square of 15?

u can quickly do this without using calc or writing down

just say: 1*1+1 = 2
then find 5*5 = 25
lastly combine them together = 225

example 2

find the square of 25
again: 2*2+2 =6
then 5*5 again = 25
join them together = 625


example 3:

find the square of 75

again you say 7*7+7 = 56
and 5*5 = 25
finally join them together as we did before = 5625

this formula only work for numbers between 1-100 and the last number must end with 5

I will post the formula for other range: keep rocking!
interesting
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Nobody: 9:24am On Jul 24, 2014
fxjones: hello fellow mathemacians,
just discover this while manipulating numbers, in class

how you quickly find the square of numbers without lifting a finger.

eg find the square of 15?

u can quickly do this without using calc or writing down

just say: 1*1+1 = 2
then find 5*5 = 25
lastly combine them together = 225

example 2

find the square of 25
again: 2*2+2 =6
then 5*5 again = 25
join them together = 625


example 3:

find the square of 75

again you say 7*7+7 = 56
and 5*5 = 25
finally join them together as we did before = 5625

this formula only work for numbers between 1-100 and the last number must end with 5

I will post the formula for other range: keep rocking!

Errr!

I didn't know that this was a big deal. Thought everybody knew.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Deage(m): 9:28am On Jul 24, 2014
shoturtrap: Ok here's this one.
Any two digit number multiplied by 11 just add the number and put it in between the original numbers if ur answer is a two digit number add the first number to the original first digit. Example

25 x 11 = 2 (2+5) 5= 275
32 x 11 = 3 (3+2) 2= 352
86 x 11 = 8 (8+6) 6= 8(14)6
Add first number of the answer to the original first digit
= 946
79 x 11 = 7 (7+9) 9= 7(16)9= 869.
10 x 11 = 1 (1+0) 0= 110

So that's one short or simple way I used back then in the primary school to quickly solve maths problems involving the 11 multiplication table.
was part of our curriculum in primary school.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by oladayo042: 9:31am On Jul 24, 2014
Lenzz: Nice one.
If its truly your discovery, then why not explore d option of patenting it cos I think its brilliant.
BUT that's only if this is your original work o
Are you kidding me? Patent what?
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Nobody: 11:34am On Jul 24, 2014
benbuks:

wow nice 1 bro......the spirit is 1 dsame tin av bin workin on too really learnt from this ....m working & thinking of finding roots of integers quicker & also multiplying /diving >3 digit numbers without calculator , our brain is a potential calculator just that sometyms we feel lazy to put it to work , ..

i"ll also share my discovery later ...

Seriously looking forward to yours also bro.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Jahnissi: 11:36am On Jul 24, 2014
Wow. Neat trick
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Magnetor(m): 12:12pm On Jul 24, 2014
fxjones: hello fellow mathemacians,
just discover this while manipulating numbers, in class

how you quickly find the square of numbers without lifting a finger.

eg find the square of 15?

u can quickly do this without using calc or writing down

just say: 1*1+1 = 2
then find 5*5 = 25
lastly combine them together = 225

example 2

find the square of 25
again: 2*2+2 =6
then 5*5 again = 25
join them together = 625


example 3:

find the square of 75

again you say 7*7+7 = 56
and 5*5 = 25
finally join them together as we did before = 5625

this formula only work for numbers between 1-100 and the last number must end with 5

I will post the formula for other range: keep rocking!
. This rule is only for numbers comprising of digmit having its tenth weighted value of 5 eg 15,25,35,45,55,65,75....95! It doesn't hold with a number like 10,11,12,13. This can be quite misleading.....I think mathematical fomulations and modelling should be exerted into full test and scrutiny before thrown to public.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Jovie: 12:15pm On Jul 24, 2014
dis tin make sense o
@OP
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by dada01(m): 12:18pm On Jul 24, 2014
shoturtrap: Ok here's this one.
Any two digit number multiplied by 11 just add the number and put it in between the original numbers if ur answer is a two digit number add the first number to the original first digit. Example

25 x 11 = 2 (2+5) 5= 275
32 x 11 = 3 (3+2) 2= 352
86 x 11 = 8 (8+6) 6= 8(14)6
Add first number of the answer to the original first digit
= 946
79 x 11 = 7 (7+9) 9= 7(16)9= 869.
10 x 11 = 1 (1+0) 0= 110

So that's one short or simple way I used back then in the primary school to quickly solve maths problems involving the 11 multiplication table.
shoturtrap: Ok here's this one.
Any two digit number multiplied by 11 just add the number and put it in between the original numbers if ur answer is a two digit number add the first number to the original first digit. Example

25 x 11 = 2 (2+5) 5= 275
32 x 11 = 3 (3+2) 2= 352
86 x 11 = 8 (8+6) 6= 8(14)6
Add first number of the answer to the original first digit
= 946
79 x 11 = 7 (7+9) 9= 7(16)9= 869.
10 x 11 = 1 (1+0) 0= 110

So that's one short or simple way I used back then in the primary school to quickly solve maths problems involving the 11 multiplication table.
shoturtrap: Ok here's this one.
Any two digit number multiplied by 11 just add the number and put it in between the original numbers if ur answer is a two digit number add the first number to the original first digit. Example

25 x 11 = 2 (2+5) 5= 275
32 x 11 = 3 (3+2) 2= 352
86 x 11 = 8 (8+6) 6= 8(14)6
Add first number of the answer to the original first digit
= 946
79 x 11 = 7 (7+9) 9= 7(16)9= 869.
10 x 11 = 1 (1+0) 0= 110

So that's one short or simple way I used back then in the primary school to quickly solve maths problems involving the 11 multiplication table.


I rather use the long multiplication method to dis ur method
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by hohafrank(m): 12:36pm On Jul 24, 2014
opeano: As much as u tried and deserv kudoz, ur logic isnt absolute. U should av made ur topic more specific by saying, getting squares of numbers that ends in 5 and below 10. Cos wt ur formula, 63*63 gives 3969 which is different when one use ur style. Nice work anyway
Olodo.read the sample again.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by opeano(m): 12:50pm On Jul 24, 2014
hohafrank: Olodo.read the sample again.
lols. U r funny man, read my post again. The trick aint absolute
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by fxjones(m): 1:13pm On Jul 24, 2014
to the critics in the house , thanks a lot, criticism is the father of all discovery, it leads to more thinking. I welcome all, giving me more rooms to learn from you.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by leonard509(m): 1:39pm On Jul 24, 2014
if i mess for here eh? Nice one btw
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by gbengs247: 2:09pm On Jul 24, 2014
Good job bro.....but the formula doesn't work for 11X11,22 X 22,33 X 33,44 X 44,55 X 55,66 X 66,77 X 77,88 X 88,99 X 99....just keep the good work, maybe you could find a new one that works for the above stated numbers. kudos!
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by stanley99a(m): 2:55pm On Jul 24, 2014
shoturtrap: Ok here's this one.
Any two digit number multiplied by 11 just add the number and put it in between the original numbers if ur answer is a two digit number add the first number to the original first digit. Example

25 x 11 = 2 (2+5) 5= 275
32 x 11 = 3 (3+2) 2= 352
86 x 11 = 8 (8+6) 6= 8(14)6
Add first number of the answer to the original first digit
= 946
79 x 11 = 7 (7+9) 9= 7(16)9= 869.
10 x 11 = 1 (1+0) 0= 110

So that's one short or simple way I used back then in the primary school to quickly solve maths problems involving the 11 multiplication table.
This method is too long, though u tried. Mine is
27*11 = just multiply 27 by 10, this will give u 270, add 27 to 270. This equals 297. Same applies to any other figure
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Ab4all(m): 3:02pm On Jul 24, 2014
shoturtrap: Ok here's this one.
Any two digit number multiplied by 11 just add the number and put it in between the original numbers if ur answer is a two digit number add the first number to the original first digit. Example

25 x 11 = 2 (2+5) 5= 275
32 x 11 = 3 (3+2) 2= 352
86 x 11 = 8 (8+6) 6= 8(14)6
Add first number of the answer to the original first digit
= 946
79 x 11 = 7 (7+9) 9= 7(16)9= 869.
10 x 11 = 1 (1+0) 0= 110

So that's one short or simple way I used back then in the primary school to quickly solve maths problems involving the 11 multiplication table.
. Too long bro. 25*11=2+5=7 Insert 7 in between 2 and 5=275. 86*11--->8+6=14 Gives 8+1 Insert 4 in between I.e 946,,,,, Simple bro
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by olamikhail(m): 3:41pm On Jul 24, 2014
Yask2guy: is 5 between 10-100?

rhetorical.check again. Smh.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by cornelin(m): 4:15pm On Jul 24, 2014
工'しし 尺丹丅卄モ尺 ∪ちモ 爪ㄚ 匚丹し匚∪し丹丅◯尺.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by emmytech2: 4:27pm On Jul 24, 2014
nice one bro,these are things one should be expecting from great forum like this keep it up
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Suresh08: 7:03pm On Jul 24, 2014
fxjones: hello fellow mathemacians,
just discover this while manipulating numbers, in class

how you quickly find the square of numbers without lifting a finger.

eg find the square of 15?

u can quickly do this without using calc or writing down

just say: 1*1+1 = 2
then find 5*5 = 25
lastly combine them together = 225

example 2

find the square of 25
again: 2*2+2 =6
then 5*5 again = 25
join them together = 625


example 3:

find the square of 75

again you say 7*7+7 = 56
and 5*5 = 25
finally join them together as we did before = 5625

this formula only work for numbers between 1-100 and the last number must end with 5

I will post the formula for other range: keep rocking!

I love mathematics but I suck at it like "kilode"
please why is math simple to u guys and impossible to me
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by joshrare(m): 7:08pm On Jul 24, 2014
opeano: As much as u tried and deserv kudoz, ur logic isnt absolute. U should av made ur topic more specific by saying, getting squares of numbers that ends in 5 and below 10. Cos wt ur formula, 63*63 gives 3969 which is different when one use ur style. Nice work anyway

Also 13*13 gives 29 using his style
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by Kolabalogun(m): 8:53pm On Jul 24, 2014
You really tried bro,coz it takes hard working before arriving @ something meaning,is just that it doesn't apply to all you think.
Re: Easy Way To Find The Square Of Number Between 1-100 By Heart by epospiky(m): 10:21pm On Jul 24, 2014
nice work.Keep it up!

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