Q1
Converting a fraction to a percentage involves:
Amultiplying by 100
Bdividing by 100
Cmultiplying by 10
Dadding 100
CBSEClass 8 (CBSE)MathematicsCh 8 · Topic 2
Converting Between Forms
Learning the methods to convert between fractions, decimals and percentages.
Core concept
For example, converting 7/20 to a percentage: 7/20 × 100 = 35%. Converting 35% to a decimal: 35/100 = 0.35. Converting 0.35 back to a fraction: 35/100, which simplifies to 7/20 by dividing both numerator and denominator by their HCF (5), confirming the conversions are all consistent and reversible representations of the exact same value.
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• Fraction to percentage: multiply by 100.
• Percentage to decimal: divide by 100.
• Decimal to fraction: write over the appropriate power of 10, then simplify.
• All three forms (fraction, decimal, percentage) can be converted between each other consistently.