Check sibling questions

Ex 2.3, 4 - Which is greater (i) 2/7 of 3/4 or 3/5 of 5/8 (ii)1/2 of

Ex 2.3, 4 - Chapter 2 Class 7 Fractions and Decimals - Part 2
Ex 2.3, 4 - Chapter 2 Class 7 Fractions and Decimals - Part 3

 

 

 

 

 

 


Transcript

Ex 2.3, 4 Which is greater: (i) 2/7 of 3/4 or 3/5 of 5/8 2/7 of 3/4 = 2/7 × 3/4 = (2 × 3)/(7 × 4) = 3/(7 × 12) = 𝟑/𝟏𝟒 3/5 of 5/8 = 3/5 × 5/8 = (3 × 5)/(5 × 8) = 𝟑/𝟖 Now, We have to find greater of 3/14 & 3/8 To compare fractions, we make denominator equal. Common denominator = LCM of 14 & 8 = 2 × 2 × 2 × 7 = 8 × 7 = 56 So, 3/14 = 3/8 = ∴ 21/56 > 12/56 i.e. 3/8 > 3/14 ∴ 3/5 of 5/8 > 2/7 of 3/7 So, 𝟑/𝟓 of 𝟓/𝟖 is greater.

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.