What’s the best way to subtract numbers? The answer: any way that works. Here are 4 methods that can help you tackle subtraction problems easily.

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Bobby McBobJune 23, 2020 at 10:24 amIs your arm/hand real?

fire foxJune 23, 2020 at 10:24 amOk, I have a method that is essentially traditional but takes me only writing a small "1" under the 5

Yaz AliJune 23, 2020 at 10:24 amMy mind is 👍

Caleb TaylorJune 23, 2020 at 10:24 amYet another method which is the easiest in this case (not always the easiest in other cases): 300 – 100 = 200 and 60 – 56 = 4 so we have 204!

Kierre HodgesJune 23, 2020 at 10:24 amThat’s fantastic! Just retraining your mind. I dig this!

Joe72521June 23, 2020 at 10:24 amWhy not just use y = (x^2 – 158x + 156)/(x-2)^2 and plug in x = 360? This approximation for y = x – 156 always rounds to the correct answer when x >= 320.

dhananjay mahtoJune 23, 2020 at 10:24 amSir please make a video regarding area model 0.25×0.35=?

nate fidalgoJune 23, 2020 at 10:24 amI imagine it might be the left to right method there using for the fastest subtraction method for bigint but until i look thru documents/code i am not going to know for sure.

They could possible modify the method to do some type of chunking similar to division chunking to speed it up.

nate fidalgoJune 23, 2020 at 10:24 amO nice came across your video!

Not many people teach the other nontraditional methods of subtraction as much.

Still debating on the fastest subtraction algorithm to implement on a computer for bigint subtractions. (what currently it is)

Most often its just two's complement representation for negative numbers then just add the numbers is how subtraction is done on computer.

But going further you want to know how subtraction is done for bigint stuff that doesn't fit in standard computer datatypes / circuitry

Reena GuptaJune 23, 2020 at 10:24 amhey presh I give my best to solve this question but u was unable to do itThomson : He told us we have consecutive letters on our papers

Thompson : Yeah he told me too.

Thomson : I don't know what your letter is.

Thompson : Neither do I know your letter.

Thomson : Now I know.

Tintin listened this conversation and wondered what the two letters could be. When he was

about to leave the island, Thomson stopped him and told him to say the password, which

were the two letters.

Maximum of how many attempts does Tintin need to make to have the correct pair of

letters, and thus pass successfully?

Chipsy BitJune 23, 2020 at 10:24 amIn the first method i learned to add one on the bottom number and not to substract the number above. strange but it's the same.

Stefan M.June 23, 2020 at 10:24 ammessi rules

Stefan M.June 23, 2020 at 10:24 amcool method

Stefan M.June 23, 2020 at 10:24 ami like it

Edward LimJune 23, 2020 at 10:24 amI'm from Singapore and I have never heard or used the Singapore Method. That being said, there is another method and it is my favourite method, ie the 10's Complement Method.

RavenJune 23, 2020 at 10:24 amThis video saved my recess!! I would be finishing my homework inside if it wasn’t for you!!!! (I’m so dramatic😂)

join the conversationJune 23, 2020 at 10:24 am"Simplicity is the Epitome of Excellence!" (from a story by W. MacFarlane)

join the conversationJune 23, 2020 at 10:24 amIf ( I say IF) You bought an article worth $1.56, why in the world would You give someone $3.60 in order to make change? 2 one dollar bills would be easier. Even for the counting up deal where you give 4 cents to make 1.60 then 40 cents to finish out the 2 dollars. Seems illogical to me? Somebody help me out here?

ShadowBaneJune 23, 2020 at 10:24 amI like the giving change method

TheRAMBO9191June 23, 2020 at 10:24 am524 likes – 60 dislikes 🙂

ZtaticifyJune 23, 2020 at 10:24 amWhat about 2's complement?

360 – 156

> 999 – 156 = 843 // complement of 156

360 + 843 = 1203 // add complement

1203 % 1000 = 203 //truncate

203 + 1 = 204 // compensate for the missing 1

Pros:

Never carry during subtraction

Only subtraction involves one digit difference from 9

Kids get to learn the basics of computing

Cons:

More steps

Not intuitive (unless the basics of computing are known)

Mindraker1June 23, 2020 at 10:24 amThere's nothing fancy about the "Singapore method". If you subtract 6 from both the top and bottom, you're going to have the same 10 carry cover effect as you would with the "left to right" method. Notice that 16-6=10.

Isaac CarrilloJune 23, 2020 at 10:24 amThe first method is faster and easier 💯🙏🏼

CraftedJedi66 MCJune 23, 2020 at 10:24 amThe Counting up method is sooo counter-intuitive. The Singapore Method is by far the best method.

Jessica SantosJune 23, 2020 at 10:24 amYour video helped my son on his homework. Thanks!🤠🤠🤠🤠