Compare 48/70 and 18/21
48/70 is smaller than 18/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
48/70 = 48 × 3/70 × 3 = 144/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
18/21 = 18 × 10/21 × 10 = 180/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 144/210 < 180/210 or 48/70 < 18/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/70 and 18/21 48/70 and 36/21 48/70 and 18/42 48/70 and 54/21 48/70 and 18/63 48/70 and 90/21