WOW, I guess this is already show level. You can perform such a supper skill on show.
Thanks mate, but there are people who are still very ahead.
It would take me 40 seconds just to read all the numbers haha You rock!
Very impressive indeed! I might need 40 seconds just to add two of those numbers…
If I know correctly, Benjamin you add digits from right to left right ?
And single digits per line, like 6 + 5 + 0 + 9…
I changed lastly into left-to-right, with this change I think I have win maybe 2-3 seconds more.
Yes, I do one row at time, adding 1 digit plus 1 digit at time.
What will be your time if you have to add just 2 rows.
Using 2 rows?
I never calculated this way but I think I will be 2 or even 3 times slower.
Jeonghe Lee, the best mental calculator of the world, use this technique.
Amazing improvement congratulations.
About the method how do you add from left to right? I mean you need to know the result from the right to have the answer to the left column🤔
Gracias Ramón, ahora te cuento, en inglés, así todos pueden ver la respuesta.
So, for example 45 + 67
We should know the end number first.
The end number of 8 + 7 is 5, because it ends in 15. The same way, the end number of 6 + 8 is 4, because it ends in 14.
That’s for the units.
For the tens, whe should add the numbers and always add 1. In our example, 45 + 67, we must add 4 + 6 + 1, which gives us 11.
So, the answer of 45 + 67 is 11 for the tens and 2 for the end number of the units, so 112
So i understand you are adding one by one column from left to right, and writing the left answer when you have the right column info?
Left column = 27
Right column end number = 2
You write the 29 after calculating the right column?
I start from below.
39 + 82 will be 121, because 3 + 8 + 1 = 12 and end number 1, because 9 + 2 = 11.
121 + 73 will be 194 because 12 + 7 (theres no carry from right) and 1 + 3 = 4
194 + 58 will be 252 because 19 + 5 + 1 = 25 and end number 2, because 4 + 8 = 12
Etc the same way
I know be heart end numbers, so i only look them and I already know the answer.
The difficulty is in the tens.
Great work Benji!