# Addition and Subtraction of Unlike Fractions

Last updated at July 10, 2018 by Teachoo

Last updated at July 10, 2018 by Teachoo

Transcript

Adding & Subtracting Unlike FractionsUnlike fractions are those fractions where denominators are different Eg: 1/2, 1/3, 1/5, 1/8 Add ๐/๐ & ๐/๐ We use two methods to solve this Method 1 1/2 + 1/3 = (1 ร 3 + 1 ร 2)/(2 ร 3) = (3 + 2)/6 = 5/6 Method 2 1/2 + 1/3 First, we make denominators same. Common denominator. = LCM of 2 & 3 = 2 ร 6 = 6 โด 1/2 = 1/3 Thus, 1/2 + 1/3 = 3/6 + 2/6 = (3 + 2)/6 = ๐/๐ Subtract ๐/๐ & ๐/๐ 1/2 โ 1/5 Method 1 1/2 โ 1/5 = (1 ร 5 โ 1 ร 2)/(2 ร 5) = (5 โ 2)/6 = ๐/๐๐ Method 2 1/2 โ 1/5 Making denominators same. Common denominator. = LCM of 2 & 5 = 2 ร 5 = 10 โด 1/2 1/5 Thus, 1/2 โ 1/5 = 5/10 โ 2/10 = (5 โ 2)/10 = ๐/๐๐

Chapter 2 Class 7 Fractions and Decimals

Concept wise

- Fractions
- Greater than, less than in fractions
- Addition and Subtraction of Fractions
- Addition and Subtraction of Fractions - Statement Questions
- Multiplication of Fractions
- Multiplication of Fractions - Statement Questions
- Division of Fractions
- Reciprocal of Fraction
- Decimal Numbers
- Greater than, less than in decimals
- Addition of Decimals
- Multiplication of Decimals
- Multiplication of Decimals - Statement Questions
- Division of Decimals
- Division of Decimals - Statement Questions

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.