Compare 20/40 and 4/42
20/40 is greater than 4/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
20/40 = 20 × 21/40 × 21 = 420/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
4/42 = 4 × 20/42 × 20 = 80/840 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/840 > 80/840 or 20/40 > 4/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40 and 8/42 20/80 and 4/42 20/40 and 4/84 60/40 and 4/42 20/40 and 12/42 20/40 and 20/42 20/40 and 28/42