Incredible Mathematic Tactics

[loginci 877]

Hey guys, I started this topic cos I want to know if you have some good tactics in maths that would be good for people, I personally have a good maths but not the best, so I might make it better if you share some tactics with me and people!

 

ok, I start:

 

It's a well-known tactic by people who are interested in maths.

 

Multiplying something with 11:

 

e.g: 12x11

 

Separate the number you want to multiply by 11

 

mine is 1 and 2 (12)

 

After this, collect them (1+2=3)

 

Add the result of this process in the center of the number.

 

it's now 132.

 

12x11 = 132

 

It has been found out true, right?

 

I know it's a simple tactic and I want harder ones, I don't really want to spend time by trying to find hard ones since I have very important exams next week. Hope you will post more and harder ones!

Edited November 1, 2018 by loginci

[GorgoBlesk 831]

It looks great but it works only for 11. Anyway, multiplying small numbers is easy.

 

57*34=50*30+7*30+50*4+7*4=1500+210+200+28=1938

 

73*68=70*60+3*60+70*8+3*8=4200+180+560+24=4964

[loginci 877]

It looks great but it works only for 11. Anyway, multiplying small numbers is easy.

 

57*34=50*30+7*30+50*4+7*4=1500+210+200+28=1938

 

73*68=70*60+3*60+70*8+3*8=4200+180+560+24=4964

I actually knew this, never found it from somewhere, it's all after my searching :pp 

 

still thx

[u812ic 1,629]

I this what you are looking for?

 

In an off beat country, they figure math a different way. 

For example: 1/2 of 5 = 3

Using this logic what is 1/3 of 10?

[loginci 877]

I this what you are looking for?

 

In an off beat country, they figure math a different way. 

For example: 1/2 of 5 = 3

Using this logic what is 1/3 of 10?

1/2 of 5 doesn't equal 3

[Mikaelson 664]

A great tactic I have for Math is a useful tool named Calculator; an incredible invention. Try it.  B) 

 

[u812ic 1,629]

1/2 of 5 doesn't equal 3

I know that and we all know that, but this one (fictitious) country does things differently. There is a logical mathematical solution to the problem. Using the given logic of 1/2 of 5 = 3, you are to find 1/3 of 10.

 

(It's a brain teaser. Are you up to the challenge?)

Edited November 1, 2018 by u812ic

[loginci 877]

I know that and we all know that, but this one (fictitious) country does things differently. There is a logical mathematical solution to the problem. Using the given logic of 1/2 of 5 = 3, you are to find 1/3 of 10.

 

(It's a brain teaser. Are you up to the challenge?)

ah okay, perhaps later, not now since i have important exams

[monkeyburn 13,551]

 

 

[Heles 9,220]

Lol, I still remember that quick method 

Learnt it 6 years ago from a math genius.

[personia 4,036]

2+2 is 4, minus one that's 3 quick mafs.

[loginci 877]

2+2 is 4, minus one that's 3 quick mafs.

Wow man, I'm sure no one knew this, well done by finding this out!

[u812ic 1,629]

2+2 does not equal 4.

2+2=22

Didn't any of you learn anything in math class? B) :D

 

Seems as though I failed spelling class.

Edited November 2, 2018 by u812ic

[loginci 877]

2+2 does not equal 4.

2+2=22

Didn't any of you learn anything in math class? B) :D

 

Seems as though I failed spelling class.

It only applies to Phyton :D

[u812ic 1,629]

It only applies to Phyton :D

What's this have to do with Dungeons & Dragons?

[loginci 877]

What's this have to do with Dungeons & Dragons?

Phyton is a coding language which is used for some simple programs. I didn't mean the one that is animal, I meant the one that is coding language.

[Boeing_787 1,455]

Try to get good at doing calculations in your head. It will save a lot of time. Ignore teachers who say it is better to do calculations on paper. Once you get good at it, you won't make mistakes.

Also, try to use calculators for time-consuming calculations.

Try to do calculations in one step (if there are multiple calculations, do them all at once with parentheses etc).

Phyton is a coding language which is used for some simple programs. I didn't mean the one that is animal, I meant the one that is coding language.

It is python, not phyton. (I wanted to correct this because two people in a row spelled it phyton lol) Edited November 3, 2018 by Boeing_787

[Boeing_787 1,455]

It looks great but it works only for 11. Anyway, multiplying small numbers is easy.

 

57*34=50*30+7*30+50*4+7*4=1500+210+200+28=1938

 

73*68=70*60+3*60+70*8+3*8=4200+180+560+24=4964

You're a genius

I know that and we all know that, but this one (fictitious) country does things differently. There is a logical mathematical solution to the problem. Using the given logic of 1/2 of 5 = 3, you are to find 1/3 of 10.

 

(It's a brain teaser. Are you up to the challenge?)

7 or 6?

[loginci 877]

Try to get good at doing calculations in your head. It will save a lot of time. Ignore teachers who say it is better to do calculations on paper. Once you get good at it, you won't make mistakes.

Also, try to use calculators for time-consuming calculations.

Try to do calculations in one step (if there are multiple calculations, do them all at once with parentheses etc).

It is python, not phyton. (I wanted to correct this because two people in a row spelled it phyton lol)

Sorry, I always confuse this :D

[u812ic 1,629]

You're a genius

7 or 6?

wrong.

[P.4.R.K.O.U.R 329]

I know that and we all know that, but this one (fictitious) country does things differently. There is a logical mathematical solution to the problem. Using the given logic of 1/2 of 5 = 3, you are to find 1/3 of 10.

 

(It's a brain teaser. Are you up to the challenge?)

x, where x is a rational number.

 

Q: Find cos 15.

Ans: cos 15 = x. Find x yourself.

#BestMethodEva

[loginci 877]

I this what you are looking for?

 

In an off beat country, they figure math a different way. 

For example: 1/2 of 5 = 3

Using this logic what is 1/3 of 10?

I got some free time to examine this and I just saw that it is easy xd.

 

Maybe it's not, idk.

 

1/2 of 5 = 2,5 but they take it as 3 

 

so basically if 2,5 was 3 

 

10 would be 12

 

12 x 1/3 = 4

 

is it the true answer?

[u812ic 1,629]

I got some free time to examine this and I just saw that it is easy xd.

 

Maybe it's not, idk.

 

1/2 of 5 = 2,5 but they take it as 3 

 

so basically if 2,5 was 3 

 

10 would be 12

 

12 x 1/3 = 4

 

is it the true answer?

Yes, 4 is the correct answer. Congratulations.

[loginci 877]

Yes, 4 is the correct answer. Congratulations.

Ok, I can now sleep in peace since I solved this question and I have a maths exam tomorrow.

 

Let's take it easy :P

 

ok ok joke

 

wish me gl tomorrow please, I don't want to get a bad mark from it

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x% of y = y% of x