use compensation method of subtract 482 from 5661

Find the sum of digits of the resultant number in square of 2245?

The regular method will be to multiply 2245 with 2245 and then add the digits of the resultant number. Do we have any other simpler method? Any tip or rule? (Asked by Raina's parent)

dear experts,in maths practice if we input the correct answer it says it is wrong

ex:92721

x 3

278163(my input)

potu's reply: wrong

92721

288163(potu's reply)

many more questions are like this,EXPERTS please recnify these mistakes please as if that one was correct i would have got a crown

what will be the answer

It is very urgent

use compensation method of subtract 482 from 5661

Find the sum of digits of the resultant number in square of 2245?

The regular method will be to multiply 2245 with 2245 and then add the digits of the resultant number. Do we have any other simpler method? Any tip or rule? (Asked by Raina's parent)

dear experts,in maths practice if we input the correct answer it says it is wrong

ex:92721

x 3

278163(my input)

potu's reply: wrong

92721

x 3

288163(potu's reply)

many more questions are like this,EXPERTS please recnify these mistakes please as if that one was correct i would have got a crown