tricks for speed subtraction

why can’t we have a new and alternate subtraction method introduced to replace the current methods since they have clearly failed

if we continue to do the same thing over and over again we will get the same result

so why not make subtraction simple


here any 10,100,1000,10000 etc these kinds subtraction

subtract that number with last for 10 and the rest for 9

look at the picture you can find out 283 is subtracted by 9,9,10


here you can see 476 is subtracted by 9,9,10

ok fine that with the 10,100,1000,10000etc these types of numbers but what about non-0 value numbers

so here is the solution

we usually subtract right to left but in this case, we are going to try left to right


here are two numbers 651 and 297




here 5 is smaller than 9 so

we take 1 number from 4

and the answer is 36


as well as

1 is smaller than 7 so

we take 1 number from 6

so the answer is 354

thanks for visiting

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