# Comparing unlike fractions

Last updated at Aug. 24, 2019 by Teachoo

Last updated at Aug. 24, 2019 by Teachoo

Transcript

Comparing unlike fractionsUnlike fractions are those fractions where denominators are different. Eg : 1/2, 1/3, 1/5, 1/8 are like fractions Compare 2/3 & 3/4 Since they don’t have same denominator, we try to make denominator same. Common denominator = L.C.M of 3 & 4 = 2 × 2 × 3 = 12 2 3, 4 2 3, 2 3 3, 1 1, 1 So, 2/3 = 2/3 × 4/4= 8/12 3/4 =3/4 × 3/3= 9/12 Since, 9/12 > 8/12 ∴ 3/4 > 2/3 Compare 12/42 & 15/45 Here, 42, 45 are big numbers, we try to make it smaller 12/42 ÷ 2 ÷ 2 = 6/21 3 = 2/7 15/45 ÷ 3 ÷ 3 = 5/15 5 5 = 1/3 So, we have to compare 2/7 & 1/3 Since they don’t have the same denominator, We try to make denominator’s same Common denominator = L.C.M of 7 & 3 = 7 × 3 = 21 So, 2/7 = 2/7 × 3/3× = 6/21 1/3 = 1/3 x 7/7 = 6/21 since, 7/21 > 6/21 Hence, 1/3 > 2/7 ∴ 𝟏𝟓/𝟒𝟓 > 𝟏𝟐/𝟒𝟐

Chapter 7 Class 6 Fractions

Concept wise

- Definitions
- Finding fraction
- Fractions on the number line
- Proper, improper and mixed fraction
- Equivalent Fractions
- Comparing fractions
- Addition and Subtraction of Like Fractions
- Addition and Subtraction of Unlike Fractions
- Addition and Subtraction of Mixed Fractions
- Statement Questions - Addition and Subtraction of Fractions

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.