Simplifying Percentages | Mental Math Trick with JusticeTheTutor #shorts #math #mathematics

Omg this helps so much for some things, thanks so much

just do 3x82=246, move it one decimal, done.

I didn't like this explanation at all. Our host went too fast and didn't deal carefully with each step. Phooey.

If it's easier to do it this way, you can also flip it around. For instance, 30% of 82 is also 82% of 30. Its easier on nice round numbers, but still works.

10% of 82 = 8.2

8.2 x 3 = 24.6

Thats how I do it

Talk about the long way of finding the answer. Short way is .3 x 82= 24.6

How is this simpler than just multiplying 82 by .3? This adds an EXTRA step. A simplification should be reducing the number of steps required, not adding to the problem with...another problem to solve.

to everyone who won't shut up about multiplying by 0.3, he's talking about doing fast mental maths, it's way way faster to divide by ten and then multiply by 3 or vice versa in your head. Multiplying by 0.3 isn't a "trick" that's literally just the question that is being asked. I don't think many people can just mentally multiply by 0.3 without multiplying by three and dividing by ten as separate steps.
He called it a trick for a reason goddamnit, because it's a faster way to do it mentally, it's like the trick for figuring out if a number is divisible by 9 or not, it's a trick, no shit you can just divide by 9 but very few people can actually do that in their head.
Saying "why not multiply by 0.3" is like being asked what 37 x 20 is, someone saying the trick is to do times ten and then times two, and your response being "why not just multiply 37 by 20?".
I've also seen a lot of comments saying to "just multiply by 3 and then move the decimal" which is literally exactly what she showed but in a slightly different order. ugh.
sorry I got heated over this but it really ain't that hard to understand that he was talking about mental maths lmfao.

what scares me for the future is that these videos necessary/helpful. i was taught how to do this in 5th or 6th grade.

Or, just flip the percent and say what is 82% of 30. You can deduce it’s 24.6 from there using process of elimination in all of 3 seconds

C'mon... Way too easy... No idea why you need ro make all those calculations

This is just Nirmal. 0.3 *82. Nothing special

C42.

I do it in the same way

Thanks

First divide with 100 and then multiply by 30
Easy

Pretty stupid system, haha

You can do that problem in your head. 8x3=24 3x2 =6 24.6

Wow. You just made a easy problem harder. Maybe making math videos isn't your thing.

10% move decimal to the left once from the number you’re trying to find the percentage of, 1% move the decimal over twice. Makes quick calculations easy for any percentage. You can do it in your head pretty easily most of the time.

Devide 82 by 100 u will get 1 percent and multiply it by 30 u have ur answer.

Or think of 82% of 30

Although it gives the same correct answer; but that just complicates the problem. It should have been made easier and shorter by multuplying 82 by .3 = 24.6 !

Since my childhood days, when I was yet an elementary grade school kid, about my 3rd grade, I already found mathematical formulas as my own way of finding the easiest and shortest ways of solving problems related to numbers -- and the same have now been known as mathematical formulas -- which, regrettably have already set me aside as if irrelevant to the evolution of such formulas and solutions as the credits to my efforts have now been kind of usurped by "teachers"/professors, "math wizards".

There's been no justice in this world !

I just look at it like 82% of 30 instead. It's easy to do 80% of 30 which is 24, i know there are 2% missing so here is the 24.6

These problems are trivial! They are artificially complicated.

bro I am 13 year old kid who is Indian(government school) but I calculated this with 82's 10% which is 8.2 so therefore to find 30% 8.2 x 3 = 24.6

These hacks add additonal steps.that make the person have to think in extra parts. Math builds the quicker you move through the components the less time you have to get sidetracked. These are not hacks...its a method...and a long one at that.

Instead of multiplying 30*82, he did 3*10*82. How does that blow my mind exactly?🙄

8.2*3

This is genius I love it

24.6

Percentages are reversible
82% of 30 is close enough to 24 that you'd be able to guess

I just divide the 82 by 10 and multiply by 3 lol

Why not do 8x3 and 2x3

isn't 82 x .3 a lot easier?

82×30÷100

Why dont we do 30 percent of 82 So 8x3 Is 24 And 3x2 Is 6 So Is 24.6

30 x 82
3x8=24
3x2=6
24.6

That's exactly what I do in my mind😂

Or you can divide 30 by 100 and multiply it by 82

30% of 82 is also 82% of 30, which is a lot easier.

What is the app u use to ?

I mean all the tools readily available for math teaching

or you could just turn 30% into a fraction of 30/100 then u 30/100x82/1

what if 3.5%

(82/100 )×30 much easier !

1 second only

1 second only