Answers

Compare 9/20 and 4/8

9/20 is smaller than 4/8

Steps for comparing fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 8 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 20 × 2 = 40,
   9/20 = 9 × 2/20 × 2 = 18/40
3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
   4/8 = 4 × 5/8 × 5 = 20/40
4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
5. 18/40 < 20/40 or 9/20 < 4/8

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ¹⁸/₂₀ and ⁴/₈ ⁹/₄₀ and ⁴/₈ ⁹/₂₀ and ⁴/₁₆ ²⁷/₂₀ and ⁴/₈ ⁹/₂₀ and ¹²/₈ ⁹/₆₀ and ⁴/₈ ⁹/₂₀ and ⁴/₂₄ ⁴⁵/₂₀ and ⁴/₈ ⁹/₂₀ and ²⁰/₈ ⁹/₂₀ and ⁴/₄₀ ⁶³/₂₀ and ⁴/₈ ⁹/₂₀ and ²⁸/₈ ⁹/₂₀ and ⁴/₅₆

Compare Fractions Calculator