Question

How to find square root of 5 digit numbers

Answer 1

Answer:

Let me enlighten you with a trick, assuming you are not looking for the old school way.

Step-by-step explanation:

STEP 1 : look at the Magnitude of the hundreds number ( the number preceding the last 2 digits) and find the largest square that is equal to or less than the numbers.. This is the first part of the answer.

STEP 2: now Look at the Last (Unit) digit of the number.

Let me illustrate with example

Square Root of 13689=?

1. Focusing 136, the highest square in it is 11 since (11 Square =121 and 12 square = 144)

2. The last digit of the number is 9 s0 the ending digit of the answers would be 3 or 7

11 times its next higher number (12) is 132 and 136ks greater than 132, so the right digit of the answer would be 7

So the final answer is 117

I hope it will help you ☺