Q1
What is needed to add fractions with different denominators?
AA common denominator
BNothing special
COnly multiplication
DOnly subtraction
SSCClass 6 (SSC)Mathematics (गणित)Ch 4 · Topic 2
Practice and Revision - Operations on Fractions
Let us practise and revise what we learned about operations on fractions. Adding, subtracting, multiplying, and dividing fractions requires
Core concept
Adding or subtracting fractions with different denominators requires finding a common denominator first, using the LCM.
How it works
Multiplying fractions involves multiplying the numerators together and the denominators together, like 2/3×3/4=6/12=1/2.
Why it matters
Dividing fractions involves multiplying by the reciprocal (flipped fraction) of the second fraction, like 2/3÷1/4=2/3×4/1=8/3.
Key detail
Simplifying fractions to their lowest terms after operations makes results easier to understand and use.
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Quick notes
• Adding/subtracting: need common denominator (LCM).
• Multiplying: multiply numerators, multiply denominators.
• Example: 2/3×3/4=6/12=1/2.
• Dividing: multiply by reciprocal.
• Example: 2/3÷1/4=2/3×4/1=8/3.
• Simplify results to lowest terms.
• This makes results easier to use.
• Practice builds fraction operation skills.