Q. 1 B5.0( 2 Votes )

# Find the square r

Square root of 151.29 = 12.3

(1): To find the square root of a decimal number we put bars on the integral part(i.e.,151) of the number in the usual manner. And place bars on the decimal part (i.e.,29) on every pair of digits beginning with the first decimal place. .

(2): Find the largest number whose square is ≤ the number under the extreme left bar (12 <1< 22). Take this number as the divisor and the quotient with number under extreme left bar as the dividend. Divide and get the remainder.

(3): The remainder is 0. Write the number under the next bar(i.e.,51) to the right of this remainder to get, 51

(4): Double the divisor and place this digit at ten’s place of new divisor (1+1 in this case).

(5): We know that 22 × 2 = 44, the new digit is 2.

Divide and get the remainder.

(6): The remainder is 7. Write the number under the next bar(i.e.,29) to the right of this remainder to get, 729

(7): Double the divisor and place this digit at ten’s place of new divisor (22+2in this case).

(8): We know that 243 × 3 = 729, the new digit is 3.

Divide and get the remainder.

(9): Since the remainder is 0 and no bar is left,

= 12.3

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