Question

What is the method of finding the digit in tens place of a square ?​

Answer 1

Answer:

Well, I actually learned something in trying to figure out what the 1’s and 10’s method is for finding square roots;

But, here’s how it works.

First, you need to know the squares for 1 through 10, I trust that you know the basic multiplication table already.

Now, the 10’s digit of that is 3 (Leaving of the last 2 digits of the number)

The largest square that is less than 3 is 1, as 2^2 = 4, so the 10’s place has to be a 1.

Now the 1’s digit of that is 4 - this means that the 1’s digit is either a 2 or an 8.

From there, you actually need to do a bit of multiplication;

12 * 12

and

18 * 18

So, do the easier of the two;

12 * 12 = 144

That is obviously not the answer as 144 is less than 324

Therefore, it must be 18 * 18.

Punching 18 * 18 into a calculator reveals that it is equal to …. 324. The answer you were looking for.

There is actually a very nice page written up on it here

Answer 2

Answer:

hope it helps you champion