# Ex 1.1, 9 - Chapter 1 Class 8 Rational Numbers

Last updated at June 22, 2018 by Teachoo

Last updated at June 22, 2018 by Teachoo

Transcript

Ex 1.1, 9 Is 0.3 the multiplicative inverse of 31/3? Why or why not ? 0.3 = 3/10 3 1/3 = (3 × 3 + 1)/3 = 10/3 We know that, Number × Multiplicative inverse of Number = 1 We need to check if 31/3 × 0.3 = 1 Taking L.H.S 3 1/3 × 0.3 = 10/3 × 3/10 = 1 = R.H.S Hence, 0.3 is the multiplicative inverse of 3 1/3 as product is 1.

Ex 1.1

Ex 1.1, 1 (i)

Ex 1.1, 1 (ii)

Ex 1.1, 2 (i) Important

Ex 1.1, 2 (ii)

Ex 1.1, 2 (iii)

Ex 1.1, 2 (iv)

Ex 1.1, 2 (v)

Ex 1.1, 3

Ex 1.1, 4 (i) Important

Ex 1.1, 4 (ii)

Ex 1.1, 4 (iii)

Ex 1.1, 4 (iv)

Ex 1.1, 4 (v)

Ex 1.1, 4 (vi)

Ex 1.1, 5 Important

Ex 1.1, 6

Ex 1.1, 7

Ex 1.1, 8

Ex 1.1, 9 You are here

Ex 1.1, 10 (i) Important

Ex 1.1, 10 (ii)

Ex 1.1, 10 (iii)

Ex 1.1, 11 Important

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.