Great, simple, excellent videos. Always makes the seemingly impossible so easy in no time at all with clear explanations. These videos need not just more publicity but to become compulsory in schools!
You are so smart. I actually got it so quickly. My my school teachers were useless. They tought us the hard way, then I got board. Thank you so much. I can't wait to teach my children these tricks xxx
Right, so what you're basically doing is: ab = 10*(a+b-10) + (a-10)(b-10) which becomes: ab = 10a + 10b - 100 + ab - 10a - 10b +100 ab = ab I like these video's. Simple pratical tricks that we can prove to work are helpful to learn. Thanks for uploading.
There is the one fucking guy in my class that turns his test in within 15 minutes of taking it where as everyone else it takes all of our 90 minute class period
You can actually do this with numbers of different tens digits... 14*23 Multiply the number on the left by the number of the 10's digit of the number on the right and add it to the units digit of the number on the right. 14*2=28 28+3=31 Do the same as before with the numbers on the units. 4*3=12 310+12=322 If it's the other way around... 23*14 Add the number on the left with the units number on the right multiplied by the 10's digit on the left. 23+(4*2)=31 Continue on... 4*3=12 310+12=322 Let's try something else... 16*49 16*4+9=73 6*9=54 730+54=784 49*16 49+(6*4)=73 ... 784 You can do it double-ended if neither of the numbers in the 10's digit is one. 81*44 Multiply the number on the left by the 10's digit on the right. 81*4=324 After that, multiply the units digit on the right by the 10's digit on the left. 8*4=32 324+32=356 Do the same as before with the units digits. Multiply them. 1*4=4 Multiply the answer 356 with 10 and add 4.
Such a nice formula , I don't undrstand that from where do u get these methods ,very interesting to know about these different types of formulas ,waiting for more videos and formulas
Excellent ,appreciate ,pl keep guiding,loving our future generation on this planet. As regards involvement of funds ,for future expansion of your thoughts of this idea u can invite viewers to voluntarily come forward, God give you 'bliss in life' .
How do you know when to multiply the first two digits of your answer and when not to? Ex. for multiplying base 20, you doubled up 25, but then when multiplying base 100 you didn't multiply the sum (107) by a further 10? do you only do it when not on base 10, 100, 1000? What is the terminology for this exception?
This video is amazing , I have my one technique too of multiplying two digit numbers Example : 13 x 12 =_____ First multiply numbers in the tens place the 3 to 2 , the answer is 6 right? So 13 x 12 =__ 6 Then add the number in the ones place , 1 + 1 = 2 (everyone knows that) So 13 x 12 = 26 Easy =]
say 30 x 20=60 you just do like half so you want to do 25 you do half of 25 that is 15 then you times it buy what ever but if you cant half it round it to the nearst ten or hundred or thousand and so on
davia williams works better with numbers close to base 10 (at least easier head math in most cases). You can do it, but have to compensate for the base 20 and base 10. 22+3 = 25, then 2*3 = 6. 256. This is wrong, so what's happening here under long way is the 3+25 when you add up the numbers... giving you 286. Personally a little hard keeping all these variances in your head when trying to do it on the fly. But if you're in a pinch it works but probably easier doing it the way you're more accustomed.
so from 10-19 you use base 10, from 20-29 you use base 20, from 30-39 you use base 30? Isn't that too complicated because what if 45 times 20 ..so basically this technique only works when the two numbers are of the same base?
Sir thanks for this great video Can you please make a full tutorial series for mathematics from basic to higher levels it will help millions of students like me across the globe who don't have facilities to attend school or university, Thanks to Jesus who send send you to help us may God bless you Brother
Nice video really helps but if you multiply even numbers like 11x11-22x22 most people know it without the method you showed cause there is table of these kinds of numbers
+Abhishek Motwani In this case I believe you must choose the lowest base: 10. 12 is 2 more than the base, therefore you need to add 2 to 21, which equals 23. Now, because 21 is 11 more than the base, you now need to multiply the 2 (from 12) by 11, which equals 22. Because the base is 10, we can only have one more digit after 23 and so, we need to merge the two numbers together: 23 22 + _______ 252 And there is your answer. Hope I could help!
Thank You For The Video.....But Facing Some Problem To Solve 104x93 OR 55x65 OR 31x41.....What Will Be The Base Number.....PLZ GIVE US FASTER WAY OF 104x93 OR 55x65 OR 31x41.......
Great, simple, excellent videos. Always makes the seemingly impossible so easy in no time at all with clear explanations. These videos need not just more publicity but to become compulsory in schools!
it seems that you know our experience how irritating when a teacher doesn't just go to the point. your amazing
You are so smart. I actually got it so quickly. My my school teachers were useless. They tought us the hard way, then I got board. Thank you so much. I can't wait to teach my children these tricks xxx
Thank you! you are my math angel, you are heaven sent. I'm so blessed to have come across your page.
That was awesome Gloria
Boss......u save my life
God bless you
This is the way we should get taught in any mathematics class, thank you Sir.
Thank you, wish I knew this easy math trick when I was a kid. Thumbs up 👍👍👍👍
Oh my! I have been waiting forever for your videos! Thank you!
Thank you so much i find it easy now i can help my classmates understand better to. YOU ARE NOW OUR MATH SENSEI TEACH US MASTER
You are legend of mathmatics we have glad to see you but plz upload new videos so we know more about it
You are enlighting me as I write this comment. I thank you with the most genuine act of appreciation.
Right, so what you're basically doing is:
ab = 10*(a+b-10) + (a-10)(b-10)
which becomes:
ab = 10a + 10b - 100 + ab - 10a - 10b +100
ab = ab
I like these video's. Simple pratical tricks that we can prove to work are helpful to learn. Thanks for uploading.
I have a math test tomorrow.... Thank you so much for explaining how to do this! I can now do it faster than ever!
There is the one fucking guy in my class that turns his test in within 15 minutes of taking it where as everyone else it takes all of our 90 minute class period
Super ! No words to explain about your explanation. Excellent boss !!
What the hell is this you made my math this easy...... This is osm👍🏽
You need to make more videos. We all need this in our lives
Chris Murphy ʏɛs sɦɛ saʏɨռɢ ċօʀʀɛċt
you are best after all
excellent sir... maaza hi aagaya
You can actually do this with numbers of different tens digits...
14*23
Multiply the number on the left by the number of the 10's digit of the number on the right and add it to the units digit of the number on the right.
14*2=28
28+3=31
Do the same as before with the numbers on the units.
4*3=12
310+12=322
If it's the other way around...
23*14
Add the number on the left with the units number on the right multiplied by the 10's digit on the left.
23+(4*2)=31
Continue on...
4*3=12
310+12=322
Let's try something else...
16*49
16*4+9=73
6*9=54
730+54=784
49*16
49+(6*4)=73
... 784
You can do it double-ended if neither of the numbers in the 10's digit is one.
81*44
Multiply the number on the left by the 10's digit on the right.
81*4=324
After that, multiply the units digit on the right by the 10's digit on the left.
8*4=32
324+32=356
Do the same as before with the units digits. Multiply them.
1*4=4
Multiply the answer 356 with 10 and add 4.
thanks very much, i impressed my math teacher
Such a nice formula , I don't undrstand that from where do u get these methods ,very interesting to know about these different types of formulas ,waiting for more videos and formulas
Awesome amazing and thanks for cool tricks
most good video for student , & all of the teachers
Its fabulous... Easy to learn
Excellent ,appreciate ,pl keep guiding,loving our future generation on this planet. As regards involvement of funds ,for future expansion of your thoughts of this idea u can invite viewers to voluntarily come forward, God give you 'bliss in life' .
Yes! I learned from both of your videos!
How can we know that when we use base 10 ,20 or 100?
how to do different type numbers in both sides
How do you know when to multiply the first two digits of your answer and when not to? Ex. for multiplying base 20, you doubled up 25, but then when multiplying base 100 you didn't multiply the sum (107) by a further 10? do you only do it when not on base 10, 100, 1000? What is the terminology for this exception?
if we taken 2 digit no. of different bases then what could be the answer
that was easy you can multiply 12×12 =144 +12 because it's one higher if you understand me 144+12=156
Niki230000 Mardary exactly, but it's not always close to it, however your right I mean you didn't say any thing wronge
I became a math genius with this thx!
How will we multiply the number ending with 2, 3etc...
this is cool, you should get an award
Lol
Great....so wonderful
At 4:53 did i see a lOl sighn like if you found it or went back to find it and have a look
This video is amazing , I have my one technique too of multiplying two digit numbers
Example :
13 x 12 =_____
First multiply numbers in the tens place the 3 to 2 , the answer is 6 right?
So
13 x 12 =__ 6
Then add the number in the ones place , 1 + 1 = 2 (everyone knows that)
So
13 x 12 = 26
Easy =]
awesome !!!
Wait what??? You're kidding , right?
But...But...
+Jean marc Boumba trolling us maybe!
Laudable attempt ....Too much helpful
download where? how do i download?
Finally new vids
Wow this video helps my son quickly does his math now
But if there is 24x36 what can i apply
Hey can someone tell me what all are the primary bases ?
Like 10 , 100 etc but what abt 50 and 150 ?
please tell me how to multiply three digit number with two digit in seconds
wonderfull i really thank you about this smart way many thanks
then how could you do this: 596x196?
Such a great teacher❤ i wish i could meet you
How to use this trick for two digits more than 25 ?
say 30 x 20=60 you just do like half so you want to do 25 you do half of 25 that is 15 then you times it buy what ever but if you cant half it round it to the nearst ten or hundred or thousand and so on
Is there any conditions to use this method?? I am not getting for
Ex: 40*43??
base 40 *(40+3) also see ua-cam.com/video/tb0KKGKwZZg/v-deo.html
It doesn't work with 14* 22. Is this method reliable please help
faddu triks hai baba...
how about below 9 or shortcut to 9x7 to make it faster to be answered???
The trick to 9s is really easy. 9x7 =63. the answer will always = 9.
9X1= 9
9X2=18 (1+8 = 9)
9X3=27 (2+7 = 9)
9X4=36 (3+6 = 9)
9X5=45 (4+5=9)
9X6=54(5+4=9)
9X7=63(6+3=9)
9X8= 72(7+2=9)
9X9= 81(8+1 = 9)
9X10=90 (9+0 =9) Look at the answers and ull see a pattern
9876543210
0123456789
Wow.. impressive! Thank you
You're back!! :D
maths genius thanks for making this video
HOW TO SOLVE THE EQUATION 23*21? DIDNT UNDERSTAND
Wow!!!! Where have you have you learned that
???
Please, put subtitles on and go to 4:02 and read it. Thank u for listening.
when i come with 31x41 and 41x31 both give different answer, why?
¿uh?
how do these work
Nice mathematics tick very good
ur a life saver what if the first digit in the first is small and the second digit is big how?
You saved my life TY.
wat about numbers like 22*13
davia williams works better with numbers close to base 10 (at least easier head math in most cases). You can do it, but have to compensate for the base 20 and base 10. 22+3 = 25, then 2*3 = 6. 256. This is wrong, so what's happening here under long way is the 3+25 when you add up the numbers... giving you 286. Personally a little hard keeping all these variances in your head when trying to do it on the fly. But if you're in a pinch it works but probably easier doing it the way you're more accustomed.
how we can multiply 10 x 25
so from 10-19 you use base 10, from 20-29 you use base 20, from 30-39 you use base 30? Isn't that too complicated because what if 45 times 20
..so basically this technique only works when the two numbers are of the same base?
see why in ua-cam.com/video/tb0KKGKwZZg/v-deo.html
Sir thanks for this great video Can you please make a full tutorial series for mathematics from basic to higher levels it will help millions of students like me across the globe who don't have facilities to attend school or university, Thanks to Jesus who send send you to help us may God bless you Brother
how can we multiply 17*19plz tell me step by step
That's what I want to know too.
Nice video really helps but if you multiply even numbers like 11x11-22x22 most people know it without the method you showed cause there is table of these kinds of numbers
you r the best you helped me alot
man you helped me out a lot usualy i am good at it but now im not but im going forward
nice i can use now in my exam thank u so much
if we want to give answer of this
12×21= 300 how in smarter way pllzzz teach me
+Abhishek Motwani In this case I believe you must choose the lowest base: 10. 12 is 2 more than the base, therefore you need to add 2 to 21, which equals 23. Now, because 21 is 11 more than the base, you now need to multiply the 2 (from 12) by 11, which equals 22.
Because the base is 10, we can only have one more digit after 23 and so, we need to merge the two numbers together:
23
22 +
_______
252
And there is your answer.
Hope I could help!
thanks.....I m more confident now....
but it is not working for 22*13 or 14 or 15...................................
I don't get it? How the hell do you do it? You can't change your method of what to add why?
ʏօʊ ċaռռօt ɢɛt sօ աɦat ɨs ɦɨs problem
thanks god.sir,thank you very much.really help me alot
I appreciate this chanel
Thank You For The Video.....But Facing Some Problem To Solve 104x93 OR 55x65 OR 31x41.....What Will Be The Base Number.....PLZ GIVE US FASTER WAY OF 104x93 OR 55x65 OR 31x41.......
I m confuse about 19X19 my answer is 288 ?????
+Mudasir Kara 19 + 9 = 28 and 9*9=81, 280+81=361 it is correct
you can do 20 x 20=100 then as it is 19 you -2
nope i didnt mean to say that
Supereb No words for!!!
can you solve 17×18
superb...!
freaking nice video its so awesome!!!
really you are great.
Hi, how to solve 104 X 111, can you explain pls
Awesm for time saving
how about 105 x 150?
105+50 =155
05*50=250
i.e., 15750 because the base is 100 taking 05 and 50
considering only 2 nos and 2 is added to 155+2=157
=15750
how to find 17×13
yes, I would like to buy your videos - you are great.
can someone please tell me how will v apply this method in 56X48??
Rameen Khan
56 X 48 = 2,708
Check with a calculator. Am I right?
No, that's because I did it wrong.
Use a different way.
maria fe no its 2688
(50+6)*(50-2) base 50 : 54*50 - 2x6= 2700 -12 also see ua-cam.com/channels/yW-Bd3NGGlV7bvfWIksTBA.html
superb bro
abacus and lovely packet Chennai India based
Happy birthday
Please do more videos. Thanks
dude I would buy this if this was a dvd 100% sold
WHAT IF MULTIPLY 42X47
What about 15 times 19
Thanks man!!
Great.
honestly, this is wow!!!!!