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Adding & Subtracting of Mixed Fractions
Last updated at June 9, 2025 by Teachoo
Class 7 (Ganit Prakash)
Chapter 3 Class 7 - A peek beyond the Point (Ganita Prakash)
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Fractions - Quick Revision
- Need for a smaller unit
- Tenth
- Hundredth
- Figure it out - Page 58
- Decimals
- Fractions to Decimals
- Reading and Writing Decimals
- Unit Conversion - Weight, Length, Money
- Decimal in number line
- Finding greater decimal
- Closest decimal
- Addition and Subtraction of Decimals
- Decimal Sequences
- Estimating Sums and Differences
- More on Decimal System
- Figure it out - Page 78, 79, 80
Transcript
Adding & Subtracting of Mixed Fractions Mixed fractions have a whole and a part Eg: 11/2, 22/3, 7 6/11, 81/8 Letβs take some examples Add 1 π/π & 3 π/π Thus, 1 1/2 + 3 1/2 = 3/2 + 7/2 = (3 + 7)/2 = 10/2 = 5 Subtract 8 π/π & 5 π/π Thus, 8 1/3 β 5 2/3 = 25/3 β 17/3 = (25 β 17)/3 = 8/3 Add 1 π/π & 7π/ππ Thus, 1 1/2 + 74/11 = 3/2 + 81/11 = (3 Γ 11 + 81 Γ 2)/(2 Γ 11) = (33 + 162)/22 = 195/22 Subtract 9 π/π & 8 π/π Thus, 94/7 β 8 1/3 = 67/7 β 25/3 = (67 Γ 3 β 25 Γ 7)/(7 Γ 3) = (201 β 175)/21 = 26/21
