Compare 16/20 and 18/42
16/20 is greater than 18/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
16/20 = 16 × 21/20 × 21 = 336/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
18/42 = 18 × 10/42 × 10 = 180/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 336/420 > 180/420 or 16/20 > 18/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/20 and 18/42 16/20 and 36/42 16/40 and 18/42 16/20 and 18/84 48/20 and 18/42 16/20 and 54/42 16/60 and 18/42 80/20 and 18/42 16/20 and 90/42