Compare 70/81 and 25/20
1st number: 70/81, 2nd number: 1 5/20
70/81 is smaller than 25/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
70/81 = 70 × 20/81 × 20 = 1400/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
25/20 = 25 × 81/20 × 81 = 2025/1620 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1400/1620 < 2025/1620 or 70/81 < 25/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/81 and 50/20 70/81 and 25/40 70/81 and 75/20 70/81 and 25/60