Easy way to find decimal expansion of rational numbers | rational numbers in decimal form

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http://www.learncbse.in/ncert-solutions-class-10th-maths-chapter-1-real-numbers/

http://www.learncbse.in/rd-sharma-class-10-solutions-chapter-1-real-numbers/

00:02 Q2. Write down the decimal expansions of those rational numbers in Question 1 above which have terminating decimal expansions.

00:05 (i)decimal expansion of 13/3125

01:05 Prime factorization of 3125 .

01:13 Convert Denominator in the form 2^n*5^n.

02:12 Write down the decimal expansion of rational number 13/3125

02:40 (ii) decimal expansion 17/8

03:03 Prime Factorization of 8.

03:16 prime factorisation of q(8) is of the form 2^n5^m, where n,m are non-negative integers.

03:29 Convert Denominator 8 in the form 2^n*5^n.

04:12 Write down the decimal expansion of rational number 17/8

04:25 (iv) decimal expansion 15/1600

05:16 Prime Factorization of 1600.

05:32 prime factorisation of q(1600) is of the form 2^n5^m, where n,m are non-negative integers

06:42 Convert Denominator 1600 in the form 2^n*5^n.

06:50 Write down the decimal expansion of rational number 15/1600

07:15 (vi) decimal expansion 23/(2^3*5^3)

07:32 Convert Denominator 1600 in the form 2^n*5^n.

08:35 Write down the decimal expansion of rational number 23/(2^3*5^3)

08:55 (viii) decimal expansion 6/15

09:06 Prime Factorization of 5

09:18 Convert Denominator 5 in the form 2^n*5^n.

09:50 Write down the decimal expansion of rational number 6/15

10:14 (ix) decimal expansion 35/50

10:36 Prime Factorization of 50

10:52 Convert Denominator 5 in the form 2^n*5^n.

11:14 Write down the decimal expansion of rational number 35/50

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CBSE solutions for class 10 maths Chapter 1 Real Numbers Exercise 1.4

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CBSE class 10 maths NCERT Solutions Chapter 1 Real Numbers

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NCERT solutions for CBSE class 10 maths Real Numbers

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