We Tested Singaporeans on MATHEMATICS with a $205 Reward! | Juniors vs. Seniors

[@chukhoonhwa3420]

Uncle is absolutely right regarding pi... pi is an irrational number and any fraction can at best approximate pi. The famous fraction that approximates pi is 22/7 (which is used in pri school, friendly whole numbers for pri sch kids rather than 3.142). Another fraction that approximates pi which is less common is 335/113, amongst others

[@nayankumarbarwa4317]

And even that, you wrote wrong. It is 355/113

[@DonburiXD]

Pi DOES NOT & NVR WILL have an EXACT value.

[@Cra3ier]

@creamy if the building is not round then you can get away with it 😂

[@salty_flakes_3191]

Rip, i only rmb pi as 3.141592654 and didn't even know can use 22/7 in pri sch...

[@gedekardiana8338]

@@salty_flakes_3191 they just use 22/7 if the circle diameter is 7 or its multiplication because mostly pri school dont like to make question using decimal

[@jdnoflegend9719]

Maybe some wording can change abit, to phrase the question better and more validity. 3rd easy Qn should ask: which fraction could achieve a close approximation to Pi? Last Qn: If want to use the word "solve", then should be: Assuming y is a constant, solve for x OR If dont use the word solve, then will be: express x in terms of y

[@damontan4749]

Ok noted, you pedant fkface

[@headsace]

Agreed totally. There would actually be 2 answers since square root of 196 is +-14

[@dam9225]

@@headsace to clarify, sq root of 196 is not ±14 and is 14. but since ×= √196 +.... it's still only 14 because it's x and not x². if it's x² =196, the ans would be ±14 since u will have to sq root it

[@mono9196]

Can somebody explain the rationale of BODMAS? I mean why do we need to butcher the reading sequence and go straight with the bracket first?

[@DarkSoul-kn3bo]

@@mono9196 You can use common sense to find the rationality of bodmas. It will be better with an example. Consider there are 3 basket filled with same number of blue and same number of red balls, and also consider there are 5 balls outside. So the equation for total number of balls will be : 5 + 3 x ( no of red balls + no of blue balls). no of red balls and no of blue balls are the total number of balls in one basket, then multiply by 3 to get 3 baskets worth of balls, then you add 5 for the balls that are outside. if you assume number of blue balls as 5 and red balls as 6 then the total number of balls will be 38. BUT if you go according to reading sequence it will be 88 which is wrong

[@IAmMrNg]

$500 question: Let k>1. Find the Laplace transform of f, where f(t)= cosh(t) if 0

[@246Trinitrotoluene_]

I was really expecting to see logarithms, trigonometric functions or calculus in the ‘hard’ question

[@bruhbro1181]

Same

[@coach.jaytee]

These are really easy. Hopefully I get to bump into you guys when you do the next math quiz. Gonna make you guys bankrupt 😂

[@TheBeyondhuman]

For the pytaghoras theorem, it depends where u define the a b and c

[@Jacob_Chen]

most peoplpe define like that

[@dibyendugoswami-l7r]

that's what I was thinking. a2 + b2 = c2 is most common but with the given options, 3rd one i.e a2 - c2 = b2 will also suffice.

[@BK8MoneyMaker]

From Chinese to maths, that's next level dude 🚀😵

[@zephrongamer9535]

But still got wrong answer🤣🤣🤣🤣

[@FbodzRyuji]

The medium questions are much easier than the easy questions. Cause the easy questions to me are more like english questions than math questions. 🤣

[@ziyao86]

those are the standard term for them....

[@FbodzRyuji]

@@ziyao86 ya. I will have fail. Hahaha. I know a² + b² = c², but i dont know what is "pythegorithm theorim", or whatever you wanna call it. Lol

[@Cra3ier]

@@FbodzRyuji it’s Pythagoras theorem 😅😂

[@FbodzRyuji]

@@Cra3ier hahaha. Thanks!! But i think i will forget tmr. Lol

[@excitedaboutlearning1639]

Who else counted 21184:4 in their head? I did it the way the Singaporean math teacher Yeap Ban Har teaches it. Instead of going from right to left, you go from left to right. First, you separate the tens of thousands from thousands and them from hundreds and them from tens and ones. 20000+1000+184 20000:4=5000 1000:4=250 100:4=25 84:4=21 Now, you add them all together: 5000+250+25+21=5275+21=5296. -- The equation at 5:49 is also moderate to solve if you know the following things: #1 the order of operations #2 you divide the numbers into units of tens and ones. #3 you know your number bonds. #4 fractions #5 you have to go back and fort and not get misled by the operations like I did.

[@audeamus7388]

That lady looks great for a 61 year old!!

[@smraybould]

Yeap, I was going to say that too !

[@jaqenhghar2446]

The medium questions are easier than the easy questions!

[@rutan4000]

Why I never bump into you guys? Could have made myself some lunch money hahaha!

[@koramawin6134]

Division does not really need to always be done before multiplication. You have to recall that division by X is the same thing as multiple 1 over X. So not putting more parentheses can be unclear.

[@tyunve]

BODMAS ?

[@ladee3338]

@@tyunve in bodmas, division and multiplication are listed together, not as separate identities. division and multiplication are done from left to right, in order of which came first. same as addition and subtraction, solving from left to right in order of which came first. not everyone uses bodmas to recall, many use pemdas and in this acronym, multiplication is listed first. but in both cases, it is always left to right.

[@kavilasha7433]

@@tyunve i thought there's another one called PEMDAS? from what i remember, the order of M and D can be swapped, the same for A and S

[@YongShengOng]

@@kavilasha7433 PEMDAS is Multiplication or Division before Addition or Subtraction. But when there are both Multiplication and Division, you still go from left to right.

[@dragygt2326]

When you have something like a×b÷c it sure is equal to a×b×(1/c)=a×(1/c)×b=(1/c)×a×b (and switching a and b) because of commutativity of multiplication. But it actually becomes a fraction which is (a×b)/c so either you divide a×b by c or either a or b by c before doing the product (that's up to you) It so means a×b÷c = (a×b)÷c = (a÷c)×b = a×(b÷c) so no when doing only divisions and multiplications adding brackets won't change a thing

[@GenericMedusa99]

u havent ask them to do triple intergration to find volume under a line intergral over a XYZ PLANE

[@johcx1994]

Fubini's Theorem. Love it. Ask them do Green, Gauss or Stoke's Theorem will be damn jialat.

[@johcx1994]

Btw for pythagoras theorem... Option 2 and 3 are the SAME; just rearrange the variables and you get 2 similar equations. I can rename my sides also... since the hypotenuse is not specifically labelled. If its not a right angled triangle, then basically the extension of the Pythagoras Theorem is the cosine rule. Too bad the lady still picked the wrong answer, or not the other 2 is right, just how to argue about it. So long as it solves the question and we need to be fluid about mathematics (so long as it is leading to the right answer and the reasoning is correct). Just hate that MOE labels c as the hypotenuse and we take it as the only answer to it.

[@nazshams9204]

MOE did not set the hypotenuse as C, what you smoking

[@johcx1994]

@@nazshams9204 Then somehow nobody really mentioned about option 2 and 3 being the same

[@songming14]

Should have done it with more description, giving a random algebraic expression doesn't mean anything.

[@onlymylovable]

@@nazshams9204 in other countries they express the hypotenuse as A

[@muhammadrazali9654]

oh wow yes makes sense

[@DeityCloud]

Wow I’m surprised that I got them correct and I always thought of myself bad with math after moving to US. I lost interest with studies when I moved to US from Philippines. Coz teachers in US don’t really teach. They just make you read chapters. Like you learn on your own and that’s not how I was used to.

[@yayrin9447]

Relax lol sounds like you're still in HS...you won't say the same once you start college. Though I completely agree with you, HS barely teaches you anything

[@Sasukej2004]

@@yayrin9447 ye these people are mostly in their 50s and 40s so they re most likely done with maths and havent used it for over 20 years

[@dukeriver2375]

People’ll forget them when they finish high school, that’s normal. That’s why something like certificate, you have to renew every 2-3 years to make sure you still remember them.

[@DeityCloud]

@@yayrin9447 you’re the one who needs to relax LMAO. I’ve graduated high school 10 yrs ago. I was just sharing my experience and opinion about my HS experience in US. Are you a teacher in HS from US who got butt hurt? Of course college is different. Students (or the parents) are paying for their education unlike HS that is free, so instructors and prof definitely have to teach their students.

[@JustSOMETHIN-v1y]

​@@DeityCloud In India, it's complete opposite! We learn vectors, calculus, 3d geometry, complex numbers, and much more in HS! I didn't thought that in the US especially in HS they didn't teach much to students... Is/was that actually the case?

[@chongqingwen6570]

That cap girl thou ❤❤❤

[@anetexixiii]

I had a math olympiad test the other day and OH MY BIRD some of these students are on another level. I heard someone used only half the exam time and still did really well 🤯

[@fischi9129]

actually BODMAS is kind of missleading, because Multiplication and division have the same priority. Subtraction and addition as well, so the calculations that involve operands of the same priority simply get done in the order they are givven, or if allowed they can be rearanged

[@Cra3ier]

I have NO idea what th BODMAS is, in Chinese we just know the formula “xian cheng chu, hou jia jian” which defo won’t mix things up, never 😅

[@fischi9129]

@@Cra3ier it's the sequence in which you do calculations: 1. Brackets 2. Orders 3. Division 4. Multiplication 5. Addition 6. Subtraction the issue is, like I said above, addition and su traction have the same priorities, same for multiplication and division

[@fischi9129]

@@Cra3ier what does "xian cheng chu, hou jia jian" mean?😅 (just out of curiosity)

[@myfyp2]

@@fischi9129 Multiplication and division first, then addition and subtraction

[@fischi9129]

@@myfyp2 uh, thanks for the translation, I judt realized after a sec😅

[@itsalltakenup]

Came here to be entertained but instead, I gained knowledge.. am I still on KZbin?!

[@o0o0o60]

How is the emath bell curve 90+ with these guys 😂

[@bruhbro1181]

idk

[@one_exp99]

Do this in the US. Most people probably cannot even answer 8 x 7 😂😂

[@shathisvengadasalam1708]

Really ah?

[@hinamatsuro1908]

@@shathisvengadasalam1708 no it's just a stereotype about Americans being dumb. I've seen some videos about questions for Americans and trivia but it's possible they just didn't grow up In America since the questions they asked had to do with America

[@SuccessforLifester]

Must find out where uncle is conducting the calculus course so that I could advise those interested not to attend 😁

[@PanMiao1402]

Hahaha “hope u guys enjoy watching this video “ ya i definitely enjoyed without stress 😂😂😂😂😂😂😂😂😂😂

[@1973Ganesh]

Haha. Fingers crossed I do well on my exams. Why am I commenting this here? Idk

[@Cra3ier]

@@1973Ganesh because of her profile pic? 😅

[@weishenlim7240]

BODMAS is wrong by the way… they simplified it to doing the brackets first, then multiplications and divisions from left to right, and finally the additions and subtractions from left to right.

[@conan2209]

Yea, I was like it’s just left to right when it’s multiply and divide, ain’t it?

[@weishenlim7240]

@@conan2209 Yes. Multiplication and division is done together from left to right, and addition and subtraction is done together from left to right. BODMAS does division first, then multiplication, then addition, and finally subtraction. The 2 methods give different answers sometimes depending on the question.

[@myfyp2]

@@weishenlim7240 Are there any examples of where BODMAS gives incorrect answer?

[@weishenlim7240]

@@myfyp2 Oh I stand corrected. BODMAS does give the same answer as the new rules. The new rules just simplifies the process. Thank you for pointing that out!

[@owjianbang01]

great vid =) yeah i agree with one of the comments about diff subject like science history etc

[@jennieyuqi6560]

For the last question, i didn’t factorise the equation no wonder I got it wrong

[@drsolo7]

Thank you Mr Ng for teaching and making maths beyond interesting

[@newdivide6770]

Everyone is pro mathematic until Indian joins the chat.

[@Liz-ux8be]

awesome series 👍

[@blalala6181]

2:21 bro defo told him the ans to give chans

[@oscarlai3924]

More maths questions video passes hehe

[@johcx1994]

There is another way to do the algebra question if I was there but nvm... brackets with algebra is a good way... dont touch the bracks or learn how to separate variables. Make it easier that way. If can make the fractions common can remove the fraction. Dont need to multiply whole equation and all... solve it separately. Then kind of put it tgt later.

[@nhatvinhnhatvinh7310]

In the US: "One plus one is two, quick mafs ... Man's not hot"

[@theencryptedpartition4633]

Students are watching video doing this in their heads and just doing face palm

[@eikter93]

Wehhhh free moneyyyy. Hope to bump into you guys

[@borneomilkystar]

J ! It's been awhile

[@Tomo-hi1sp]

I also want to get quizzed leh...

[@klubcj]

Try this on the street of America

[@jeff_chen68]

algebra is fun feels like doing something in front of the boss which is actually nothing

[@Cra3ier]

Not difficult actually, just forgot 196 is 14x14 and I took it the manual way, I think I exceeded seconds by rearranging my answer. Good challenge 👍

[@LoverZSouL]

Ah, I forgotten everything....

[@flora4775]

I just realized that the level of math in my country is high

[@Chloekimhw]

♥️♥️

[@StormyMusic9]

So sad im too poor to go orchard shopping and eat otherwise i would be earning $205 :( Sir, can come hougang coffeeshop or cc hawker and do these math questions pls thx

[@renaldhif]

Pls do this again with different subject 🤣🤣

[@torinobravo2859]

Wow, what's her name... The first one?😮❤...the one with the cap.

[@Fearbeast14]

Bro equaletral means all side same Equation b(h)÷2 Eg 20×3÷2 60÷2=30

[@jacer5677]

this is easy middle school math

[@Kaylerca]

The Korean girl though

[@CovanasticTheGamer99]

fiyah vid JeremiahFIAH

[@Tropicmonsters]

🔥 LETS GO

[@terrybernaltayyodchannel123]

Wow very nice 👌 good job

[@3n3r207]

I could answer all those under 3 mins 😂 guess I need to be walking ard orchard road more often

[@joventock7290]

the white shirt with cap is cute

[@loctheog9620]

Got a bf alr

[@brok3]

@@loctheog9620 so who's she drop the @

[@kenn756]

Are Singapore people this chill always?

[@themusicdiplomat730]

nope

[@user-yi8il7hm1e]

Korean girl @ please

[@Ehzgnimeh]

Come lemme do the test I’ll do the medium mode stuff with mental calculation. The questions are Soo easy. Lemmeee dooo

[@lionelfoo9602]

srsly these ppl are jokes, i wont even give $10 prize for this level of questions

[@hanshallo4468]

Last one: Easy af

[@jeffreyliew6759]

i forgot everything......means math is not important in our daliy life hahaha

[@cindysngsy]

Isn’t the last one over 168 instead of 163?

[@milaanvigraham8664]

What is this street? It looks pretty. I've only been to Singapore twice for short trips so I don't know 😅

[@Zoids-bf6op]

naturally the cap girl in white will do well cause she's closest to the age where they taught all these! Okie but that aside does anyone know her IG :D

[@theencryptedpartition4633]

Good to see some videos without the mask

[@HanasadhanA]

Sec 2 students is like pro in all this sia I want to participate

[@carr16k]

1:07 that just sounds wrong 😂

[@EXGenes]

damn i wouldve gotten extra $150 :/

[@ignatiuschua5268]

I am close to 60 and I get all correct. All very easy except if you are standing in front of a camera and him stressing you.

[@ignatiuschua5268]

@@hannesRSA These are primary school to sec 2 mathematics.

[@ignatiuschua5268]

@@hannesRSA True.

[@Tropicmonsters]

Three Cameras and a light 😝

[@Cra3ier]

@@Tropicmonsters pressure goalkeeping the money 😂

[@adrianecoy905]

You mean "How old are you?"

[@ernestho1992]

I got all questions correct as a Malaysian 🎉🎉🎉🎉🎉🎉🎉

[@ichokefinals]

i legit got all correct

[@maltitos5180]

you should be

[@ichokefinals]

true

[@neutrivictoire.1833]

who asked

[@ichokefinals]

your mom.

[@DJLucasSG]

The korean girl is 😍😍😍

[@beckham8316]

The answer to the last question is (-40y-42)/163 right?

[@xaviergrewal]

The guy represented in Math Olympiad?!😳🤦🏽‍♂️

[@ckn3269]

The korean gal ig?

[@thuoo7804]

Must ask them solve 2nd order differential equations

[@johcx1994]

1st order with matrix already headache. 2nd order need to breakdown and all... even more siao. Why not do ODE with a non-diagonalizable matrix or Duhamel's formulae? Even more siao. Wanna up some more? PDE.

[@IAmMrNg]

$250 question: Solve the differential equation y’’’+ky’’-ky’=k, where k>=0. 10mins

[@kasperchan9792]

30 suppose to divide by 2 first bro… how

[@Cra3ier]

13:11 Anyone realise the host also mistakenly wrote 168 instead of 168x like the Chinese girl? 😅

[@zohair-lab]

I literally got up and grabbed my notebook for that algebra part. I even timed myself😂 I got em all right😂I guess I am a nerd

[@fathimanazila2421]

Me too!

[@endeavorer4811]

Naah, that's nothing close to being a nerd

[@yashpundir8079]

Come to India

[@JCzzzzz]

Alamak why I wasn't at Orchard when this happened

[@badboynr]

She can be good teacher

[@julyaugmsj]

Did anyone notice that the algebra question is sq rt of 1107+89 and not 107+89 or did I notice it wrong?

[@johnappleseed9290]

It’s in parentheses

[@racquelsabesaje4562]

-40y-42/163

[@destruction8192]

X= (-4y-42)/163

[@princessg8097]

I got all correct hahahaha

[@tsukiya_0]

sad i didnt get to dobit.. easy decimation

[@LowCheeHao]

why 4(14x + 3y) = 56x + 3y ? i tot its 56x + 12y

[@Vampyreq]

The video is incorrect, you are right. And it's strange that he can wrongly write 56x + 3y but eventually still get the correct answer.

[@k-potato3593]

@@Vampyreq because he knows tge ans. He probably js made a careless mistake

[@malikcollins]

You can actually write the pythagoras theorem in different ways--but shhhhh. You did not hear that from me.

[@DJSteveRobbertt]

a squek + b squek = c squek

[@Tropicmonsters]

🤣🤣🤣

[@LowCheeHao]

Anyone got her IG?

[@HaroldtheNihongoStudent]

Damn. If you ask these things in the Philippines, nobody will get anything.

[@Leznah]

Easy $205 as a student

[@racquelsabesaje4562]

68+30/(18-32/2)x3

[@e_hgxR1UBderSds_W1ndzNCudPg]

75 is correct according to the PEMDAS. Pls give that uncle $20! :)

[@montybeton]

That's because PEMDAS is a confusing acronym. In German M and D are collapsed into one 'Punktrechnung' (dot calculation) and A and S into 'Strichrechnung' (line calculation). Both are left associative, so 30 ÷ 2 * 3 is calculated as (30 ÷ 2) * 3.

[@BienvenidoMarquezBacsal]

Same thoughts man.. We also use PEMDAS back home 😅.. or Bodmas maybe pretty use in singaporean math..im not so sure also.. haha

[@LowCheeHao]

Unfortunately that answer is wrong, ppl always say PEMDAS lolol too bad for you guys

[@aimer3042]

Even if you use PEMDAS, For multiplication or division, always do left to right. That's the order as they are on the same level.

[@resonance4789]

there's no difference between pemdas and bodmas...

[@kennibal666]

These should all belong to easy category...

[@kelszeto]

All these questions are easy math

[@sgeternity2012]

Too easy, wonder what’s the difficult question is

[@jalapenlo]

the 61 year old lady looks so young

[@WonderfulWorld333]

Nice

[@uptothe7thstorey]

What a fun series! I would have accounted for the ± value of the squareroot for the algebra question though. In my 30s now, but I lost enough marks for this to always remember it. My teacher would illustrate how the quadratic graph y=x2+c, where c≠0, has two roots. Still appreciating Mr Tay Yong Hwee! 🫶

[@kentagent6343]

Suprised they use 22/7. The most accurate way would be to either just say the circumference/diameter of a circle. Easiest is to use the unit circle since we know that 360 degrees=2π: (2π)/2 = π