My friend had once done this to me and my jaw dropped straight down when he showed me the number, then i asked him how he did it and then he said nope not telling you! so then i saw this video and now i under stand how he did it! Thanks! : )

@SuperNawor

7 жыл бұрын

weeb

INCREDIBLE!!! 😊🤩❤🙌👏👍 Thank you so much Sir!!! ❤ Wishing you all the best!!! 😊❤🙏

Great video, this is a very clever and unexpected math trick. Your videos are fantastic. I will be looking back on some of your earlier work on factoring for an upcoming exam. You've taught many people a lot of math. Thanks

thank you so much sir! even a legendary video after more than a decade!

I always loved that trick and always got a great response from the kids in class.

Amazing. Thank you sir for a wonderfull trick. Hatts of you sir!!!

@masterupper2954

3 жыл бұрын

Are you alive

If you saw this without watching to the end of the video, then you are very observant (and I congratulate you). I have done this trick about 25 times in front of classes, and I have never had anyone observe that without being told. Well done.

Yes it does. Every time I try it with a new class, and as a substitute teacher, I try this over 20 classes a year. I was also a regular full time teacher for over 37 years, and I tried it with these classes as well. They were all impressed, right up to grade 12 Math. I am sorry that it did not impress you (as you are obviously at a much higher level in thought as these mere mortals), but I will continue to use it with new classes I bump into.

Simply amazing, congrats!

I like this trick! Good job minkusbc!

I love it! Thanks.

Amazing tricks... Thanks professor...👍👍

Whoa! This is what i call an awesome math trick

Thank you very much sir for showing this my friends were surprised.

awesome trick. you clearly explain the trick too. nice job..............

WOW! this is great... i tried it myself and it works! i'll gonna show this to my M&M's Club - Math Matters, an hour from now (y)

that was great! i llove your videos you are realy realy helpful!!

You were the best sub ever!!

this is great! thanks for sharing!

really cool! i'll use it in my class. thanks :)

What question are you looking at? Again, every time I do this in front of a class, I have kids who are amazed.

Excellent sir

Thank you!

Thank you so much

Great job . People that comment bad things are mean because u took urging time to make a video and all people do is slang you off

cool im gonna practise that and use it on my friends and family!

Fun trick!

whoa, im trying to back you up here! lol I actually appreciated the video and think that its cool :)

Finaly I can reveal my friends' magic trick... I just need a confirmation to reveal it....

Messed around with this, and I noticed that if you attempt this with the number 8 instead 9, you end up with an initial subtraction of 224 instead of just 2 (If you do this with 3 digits). But you still add the two in the beginning. The only problem with this way is that if your target puts a 9, you would have to do the math in order to make sure that the calculations are right, and often you will be using less digits than what you started with.

superb

really cool trick!

Thank very much

You can also do this trick with more/less digits just as long as they add up to nine

I paused it after the trick and eventually figured it out, but i must admit I was definitely wowed at first. I'll be sure to pull this on someone lol.

this was amazing

Cool Trick. I like it. I think that is the best way to having fun with math. :) ♡♡

@Haelstrome : Yes, I have shown it to Grade 12 classes and my very good Advanced Placement Calculus class. You couldn't have figured out what I did after I had written the first number, because you didn't know what I was going to do. I think that you are being to critical, maybe it is the way you deliver the "magic" that makes it cool. Try it on a few people, see what happens. Just make sure no digits are repeated or in an obvious patter. Have fun, you're allowed to!

This is awsome!!!!

Great trick u r awesome

I like it a lot

I watched alll you have given to KZread sir

thank you so much Sir to reveal this trick actually I've been searching this method since I was 10years old. this method was shown by my tuition sir but he has not revealed yet.

nice trick!

Nice explained in easiest way

@meghanorlando. Thanks, for the pat on the back. Some people are way too critical of what is really a simple little trick.

Congratulations! I have done this trick 100 times in front of classes, and no one has *seen that right away". Consider your self, very observant!

You are very observant then. I have done this trick in front of classes for over 30 years, and have never had a student notice that.

that was nice trick... I like it..

Thanks a lot

Really smart

I enjoyed this! I'm terrible at math but think if you were my teacher, I'd be much better at it ^_^

tks for the tricks, sir... :)

The guy who made this videos grandaughter : hi, I was in the audience when my grandpa did this trick, and it was not fake. I'm 14, and quite enjoy math, and my grampa happens to be a high school math teacher and is very smart! so watch what you say! :)

you got it. well, x / 2 and then whatever steps I decide to add after it. The point being that the final answer has nothing to do with the original number chosen by the spectator

Great

Yes, I added my own numbers, but in real time, each number I added within abut 10 seconds. If I knew the answer and was doing all the work in my head, I would be a genius at mental math. I have done this trick in front of classes of up to 30 students from grades 9 to 12 over 20 years, and NOT ONCE have they failed to be amazed, because I put my numbers down so fast that I could not possibly be doing it in my head. Watch to the end of the video to see how I get my answers so quickly.

very nice sir

Wow, ignore those other tarts, this is great trick! I liked it! If you were my teacher, I'd have loved it!

Nice trick;

nice majic

Actually the numbers can be anything under 10,000. However, if they choose a number such as 9,538 I would have to reply with 0,461 in order for the two to have a sum of 9,999. This seems a bit weird for a four digit number to start with a "0", so I try to get people to choose numbers less than 9,000 so this does not come up.

Again, I am a Math teacher. The trick works through algebra, not any "fake audience". The three people who helped me out here had never seen the trick before. They were 11, 13 and 57 and were all quite surprised, so the sound track is real.

gaben is that you?

You're right, a fifth grader can do this trick AND wow his parents and classmates. I have shown this trick to hundreds of classes from grade 8 to grade 12, and they all are impressed. None have got the "trick" until it is explained to them. Try it. Now, if you make sure there are no repeating numbers and no pattern to the 4 digits, it is harder to pick out the solution.

My teacher showed me this at school it's so smart

@hdhdhdi7765

3 жыл бұрын

That’s why I’m here I wanna know how

can you explain this using algebra though

@cucngu66. If you had 3 sets of numbers that added up to 9999 then you would subtract 3 and add 30000 by putting a "3" in front.

If one of the numbers that the other person gives me starts with a 1, what number would I choose? Keeping in mind the numbers have to be under eight thousand? Thanks!

good i like it

It doesn't matter what they say. As long as he gets to add the last number he can add it into the written down answer.

very easy tricks i knew this since i was 6 years old and im 37 ryt now..

give us some more tricks

Thank

My coworker did this trick on me today and I NEED TO KNOW HOW!

@BeComingNyrell

3 жыл бұрын

He used 5 digits though

AWSOME!! :D

aswersome!!!!

I already know this trick but still cool.

@jacobkuder8963

7 жыл бұрын

me to

I used to do this trick all the time, except i did it with 5 digit numbers :)

I had this trick long ago

So... do I have to do the part at the end with the -2 or not? Will it still work if I just do the 9999 pattern?

@WickedSnake87

8 жыл бұрын

Yes, you need the -2. Simply adding 20000 will be incorrect because you aren't adding 2*10000, you are adding 2*9999, which equals 19998, which is 20000-2.

this is cool ;)

Gud video !!

I been knowing trick for a long time but I do it with 5 digits number and it works.

@SuperNawor

7 жыл бұрын

weeb

wow~!

haha just nice!!!

I know I shouldn't have made fun of the person's spelling, but I couldn't resist. Now maybe we could figure out that if a coculator did exist, what would it look like? Maybe a calculator shaped chocolate bar?

not loudly sir but I am soooooooooory that I tell you that

This is great!!! I did it to my family worked perfect :) one question what if the first number had a 1 at the end how do you subtract 2 ? Lets say the first number they give me is 3741 i would write on the other paper 2374_?????

@wayneloutet6531

6 жыл бұрын

Subtract 2 from 41 to get 39: Final answer 23739

@minkusbc clearly well thought out

Don't be ridiculous, of course I cannot say "every" student was impressed. I did say that all the classes were impressed. Each class' reaction was one of disbelief, followed by "how'd you do that!". I then showed them the trick, explained how to tell others, and told them to pass it on. I'm sorry that I did not impress you, but then it's hard to impress someone so critical. Have a lovely life....

cool

SInce the number ends in 41, take 41 and subtract 2 to get 39. Thus the answer will end in 39 and should be 23739.

You're the reason we can't have nice things.

math is my favorite science...

@John Smith Do you watch doctor who

what happens if there is a 0 at the end of the first number they right

Sure, what is it that you want to figure out?

Hi, I learned it as a kid. I tried with 13 and 16 digits but I always mess up. Does it have to be less than 9 digits?

@thegrindrr

Жыл бұрын

Nah

👌👌👍👍👍