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A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.

Find the square root of the following decimal numbers.
(i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

Solution:

Perfect Squares in decimal form are given in the question.

We will be finding the square root by using division method

To find the square root of decimal numbers, put bars on the integral part of the number and place bars on the decimal part on every pair of digits starting with the first decimal place.

(i) The square root of 2.56 is calculated as

Find the square root of the following decimal numbers. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

√2.56 = 1.6

(ii) The square root of 7.29 is calculated as

Find the square root of the following decimal numbers. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

√7.29 = 2.7

(iii) The square root of 51.84 is calculated as

Find the square root of the following decimal numbers. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

√51.84 = 7.2

(iv) The square root of 42.25 is calculated as

Find the square root of the following decimal numbers. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

√42.25 = 6.5

(v) The square root of 31.36 is calculated as

Find the square root of the following decimal numbers. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

√31.36 = 5.6

☛ Check: NCERT Solutions Class 8 Maths Chapter 6

Video Solution:

Find the square root of the following decimal numbers. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

NCERT Solutions for Class 8 Maths Chapter 6 Exercise 6.4 Question 3

Summary:

The square root of the given decimal numbers (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36 are (i) 1.6, (ii) 2.7, (iii) 7.2, (iv) 6.5, (v) 5.6

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