Aptitude Topics
Conversions
Converting between forms is essential for solving mixed-format problems. Fractions are converted to decimals by division, while decimals are converted to fractions by placing the value over the appropriate power of 10.
Essential Formulation Tips
- To convert a decimal to a fraction: Write the decimal as a numerator (ignoring the point) and use a power of 10 as the denominator based on the number of decimal places.
- Example: $0.25 = 25/100 = 1/4$.
Example Breakdown: Decimal to Fraction
Problem QueryConvert $0.625$ to a fraction.
Step-By-Step Solution Path
$0.625 = 625/1000$.
Divide both by 125: $625 \div 125 = 5$, $1000 \div 125 = 8$.
Result: $5/8$.
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