Maths trick -
Finding the square root of 2-digit numbers ending in 1
******************************
Follow the following Steps:
>Select a 2-digit number and square it.
>Drop the last two digits of the square.
>Find the largest square root of the remaining digits.
>This is first digit of the squareroot.
>The second digit is 1.
Examples:1
>If the square is 2601:
>Drop the last two digits: 26
>Find the largest root in 26: 5 × 5 = 25
>The first digit is 5. The second digit is 1.
>So the square root of 2601 is 51.
Examples:2
>If the square is 8281:
>Drop the last two digits: 82
>Find the largest root in 82: 9 × 9 = 81
>The first digit is 9. The second digit is 1.
>So the square root of 8281 is 91.
Finding the square root of 2-digit numbers ending in 1
******************************
Follow the following Steps:
>Select a 2-digit number and square it.
>Drop the last two digits of the square.
>Find the largest square root of the remaining digits.
>This is first digit of the squareroot.
>The second digit is 1.
Examples:1
>If the square is 2601:
>Drop the last two digits: 26
>Find the largest root in 26: 5 × 5 = 25
>The first digit is 5. The second digit is 1.
>So the square root of 2601 is 51.
Examples:2
>If the square is 8281:
>Drop the last two digits: 82
>Find the largest root in 82: 9 × 9 = 81
>The first digit is 9. The second digit is 1.
>So the square root of 8281 is 91.
