Compare 10/5 and 40/21
1st number: 2 0/5, 2nd number: 1 19/21
10/5 is greater than 40/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
10/5 = 10 × 21/5 × 21 = 210/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
40/21 = 40 × 5/21 × 5 = 200/105 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/105 > 200/105 or 10/5 > 40/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/5 and 40/21 10/5 and 80/21 10/5 and 40/42 30/5 and 40/21 10/15 and 40/21 10/5 and 40/63 50/5 and 40/21 10/25 and 40/21 70/5 and 40/21 10/35 and 40/21