Addition and Subtraction of Unlike Fractions

Chapter 7 Class 6 Fractions
Concept wise

Unlike fractions are those fractions where denominators are different

Β

Eg: 1/2, 1/3, 1/5, 1/8

Β

Add 1/2 & 1/3

We use two methods to solve this

Β

Subtract 1/2 & 1/5

Β  Β  Β  Β  Β  Β  1/2 β 1/5

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### Transcript

Adding & Subtracting Unlike FractionsUnlike fractions are those fractions where denominators are different Eg: 1/2, 1/3, 1/5, 1/8 Add π/π & π/π We use two methods to solve this Method 1 1/2 + 1/3 = (1 Γ 3 + 1 Γ 2)/(2 Γ 3) = (3 + 2)/6 = 5/6 Method 2 1/2 + 1/3 First, we make denominators same. Common denominator. = LCM of 2 & 3 = 2 Γ 6 = 6 β΄ 1/2 = 1/3 Thus, 1/2 + 1/3 = 3/6 + 2/6 = (3 + 2)/6 = π/π Subtract π/π & π/π 1/2 β 1/5 Method 1 1/2 β 1/5 = (1 Γ 5 β 1 Γ 2)/(2 Γ 5) = (5 β 2)/6 = π/ππ Method 2 1/2 β 1/5 Making denominators same. Common denominator. = LCM of 2 & 5 = 2 Γ 5 = 10 β΄ 1/2 1/5 Thus, 1/2 β 1/5 = 5/10 β 2/10 = (5 β 2)/10 = π/ππ