1:10 we can also use (a+b)^2 or (a-b)^2 method for e.g. (79)^2 we can write it as (80-1)^2 as it is in the form of (a-b)^2 = a^2+b^2-2ab apply the identity 80^2+1^2-2×80×1= 6401-160= 6241
No worries, I will create a new video on the same method in depth with the logic behind this method. Then you will be sure about the alignments of the lines as well.
Yup, it works How to know which fraction is greater? Ex. 27/24 and 26/22 Now, multiply 27*22 and 24*26 whichever product is big will be the greater fraction. Same applies with any fraction!
Maybe these videos aren’t meant for people not great at math but I find the second step confusing and I would love it if you could explain it a little slower at the beginning
🎉I like your videos very much, but there are a couple of constructive comments I would like to make. You are speaking a little fast. The good thing is we can rewind the video. 😊 The other thing, is I got confused with the multiplication part of the last example because you said “2 times of 4 into 8.” To me, “4 into 8” signifies division (4 goes into 8 two times). Wouldn’t it be easier to say “double 4 times 8” or “4 times 8 times 2”? I am not sure if you are used to visualizing these calculations in your mind, but for those of us used to pen and paper to calculate, it would be good to have the process in writing, maybe on the side to see where the numbers are coming from. I was able to follow you because I know math, and I enjoy solving problem and finding hacks, but as a teacher, I put myself in the shoes of struggling math learners and feel they would need a little bit more scaffolding support to picture the process easily. Perhaps you could also create a video on how to do mental math. Any tricks to visualize numbers and keep them straight in your mind? In any case, thank you very much for this great resource.
Thank you, thank you soo much for your feedback. I will surely work on them. And, for your last point, it's easier to calculate maths in pen and paper. But it will be effective if you can just visualize the numbers in your eyes looking at the question. I meant to say doing calculation in mind without using any pen and paper. Practice is the key here.
Thank you for your response. I learned about hacks in the 1980s from a guy who wrote the book the Human Calculator. I bought the book, and enjoy the shortcuts. However, in the 40 years since, while I have been able to look for patterns and numbers in different ways, I am still not able to picture numbers in my mind. I am a visual learner. I need input. I may also be kinesthetic because I need to write to calculate. Although when I was younger I never showed my work, I arrive at answers mentally, too, but I am not sure I would be able to calculate and keep long lists of numbers in my mind. I close my eyes and hear, say, the number “125,” my mind is still in the dark. :) Do you picture numbers in your mind? I wonder if that is a learning style depending on your background. I am Latin-American, but also bilingual in English methodology. I am very much interested in Indian, Japanese, and Chinese methods for teaching math. They are so interesting to me. I enjoy adding from left to right, a learning shortcuts for doing arithmetic, especially those to avoid tedious operations like multiplication of big numbers, long division, exponents, and square root.
Use your computer. Writing basic equations by hand is archaic. This is like asking how to start a fire and saying the best way is using kindling from a tree you chopped down with a rock. Hand written math is dead in any practical sense.
If you look at my channel intro, you'll find that these videos are for the competitive exams candidates where even basic calculators aren't allowed late alone a computer.
1:10 we can also use (a+b)^2 or (a-b)^2 method for e.g. (79)^2 we can write it as (80-1)^2 as it is in the form of (a-b)^2 = a^2+b^2-2ab apply the identity 80^2+1^2-2×80×1= 6401-160= 6241
Thank u for these all types of videos 🙏😊 your videos were very nice
I think that is (a+b)^2 = a^2 + 2ab + b^2
Could you explain how you decide where to align the numbers on the second and third rows? and maybe why?
No worries, I will create a new video on the same method in depth with the logic behind this method. Then you will be sure about the alignments of the lines as well.
Yup, it works
How to know which fraction is greater?
Ex. 27/24 and 26/22
Now, multiply 27*22 and 24*26 whichever product is big will be the greater fraction. Same applies with any fraction!
this video is gold appreciate for that man
Finding it a little difficult to do 3 digit numbers in head, but it's an amazing trick!
keep practicing ❤️
Thanksssss man.
❤
It really helped me a lottttttt.
This is a hidden gem in youtube
Me wanting to learn.
Also me: *procrastinating*
Good method
Good explanation
👍👍👍
Thank you so much sir ❤
Maybe these videos aren’t meant for people not great at math but I find the second step confusing and I would love it if you could explain it a little slower at the beginning
Thank you for your feedback. ❤️
I will not only try to be a little slower, but also create one more indepth video on this topic as well. 😀
2nd step samjh nhi aaya
Sir, what about cubes
Thankssir
Tanksforyou🎉
M trying do this with 12 ... not done
🎉I like your videos very much, but there are a couple of constructive comments I would like to make. You are speaking a little fast. The good thing is we can rewind the video. 😊 The other thing, is I got confused with the multiplication part of the last example because you said “2 times of 4 into 8.” To me, “4 into 8” signifies division (4 goes into 8 two times). Wouldn’t it be easier to say “double 4 times 8” or “4 times 8 times 2”? I am not sure if you are used to visualizing these calculations in your mind, but for those of us used to pen and paper to calculate, it would be good to have the process in writing, maybe on the side to see where the numbers are coming from. I was able to follow you because I know math, and I enjoy solving problem and finding hacks, but as a teacher, I put myself in the shoes of struggling math learners and feel they would need a little bit more scaffolding support to picture the process easily. Perhaps you could also create a video on how to do mental math. Any tricks to visualize numbers and keep them straight in your mind? In any case, thank you very much for this great resource.
Thank you, thank you soo much for your feedback. I will surely work on them.
And, for your last point, it's easier to calculate maths in pen and paper. But it will be effective if you can just visualize the numbers in your eyes looking at the question. I meant to say doing calculation in mind without using any pen and paper. Practice is the key here.
Thank you for your response. I learned about hacks in the 1980s from a guy who wrote the book the Human Calculator. I bought the book, and enjoy the shortcuts. However, in the 40 years since, while I have been able to look for patterns and numbers in different ways, I am still not able to picture numbers in my mind. I am a visual learner. I need input. I may also be kinesthetic because I need to write to calculate. Although when I was younger I never showed my work, I arrive at answers mentally, too, but I am not sure I would be able to calculate and keep long lists of numbers in my mind. I close my eyes and hear, say, the number “125,” my mind is still in the dark. :) Do you picture numbers in your mind? I wonder if that is a learning style depending on your background. I am Latin-American, but also bilingual in English methodology. I am very much interested in Indian, Japanese, and Chinese methods for teaching math. They are so interesting to me. I enjoy adding from left to right, a learning shortcuts for doing arithmetic, especially those to avoid tedious operations like multiplication of big numbers, long division, exponents, and square root.
Geniussss
it doesn't work for 999
What bout 99
This trick is not applied for 498..398...298....
9×8×2=144 I think you can put this in the third line，I just tried，and it worked.
498^2 = 150 + 98 // 004 = 248004😐
398^2 = 1600 - 16//04 = 158404
298^2 = 900 - 12//04 = 88804🥵
Not working
Good trik
529
Thank you very much , i will break my calculator 😅😅😅 troll its hard for me to
So complicated
It isn't if you actually try. You don't need a high IQ for it, just discipline.
Use your computer. Writing basic equations by hand is archaic.
This is like asking how to start a fire and saying the best way is using kindling from a tree you chopped down with a rock.
Hand written math is dead in any practical sense.
If you look at my channel intro, you'll find that these videos are for the competitive exams candidates where even basic calculators aren't allowed late alone a computer.
Oh I didn’t mean it really as an insult or anything, I liked math when I was younger. More an observation of the practicality.
Yeah, for regular use, using tech is better anyway!
Your middle step is totally hard to understand. Your accent is very difficult.
No worries, I will come up with a new indepth video on this topic very soon.
@@learn.with.mahbub no worries I understood 😃
maybe ur just stupid @jamesd.8574
( 529 ) ^2 = 279841 answer