# Ex 1.1, 1 (ii) - Chapter 1 Class 8 Rational Numbers

Last updated at Aug. 31, 2021 by Teachoo

Last updated at Aug. 31, 2021 by Teachoo

Transcript

Ex 1.1, 1 Using appropriate properties find. (ii) 2/5×(−3/7) – 1/(6 ) × 3/2+1/14 × 2/5 2/5×(−3/7) – 1/(6 ) × 3/2+1/14 × 2/5 = 𝟐/𝟓× (−3/7) +1/14 × 𝟐/𝟓 – 1/(6 ) × 3/2 = 𝟐/𝟓 × ((−3)/7+1/14)−1/6 × 3/2 = 2/5 × ((−3 × 2 + 1)/14) −1/6 × 3/2 = 2/5 ((−6 + 1)/14) −1/6 × 3/2 = 2/5 × ((−5))/14 − 1/6 × 3/2 = (−1)/7 − 1/6 × 3/2 = (−1)/7 − 1/2 × 1/2 = (−1)/7 − 1/4 = (−4 − 7)/(7 × 4) = (−𝟏𝟏)/𝟐𝟖

Ex 1.1

Ex 1.1, 1 (i)

Ex 1.1, 1 (ii) You are here

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

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.