Compare 4/40 and 6/21
4/40 is smaller than 6/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
4/40 = 4 × 21/40 × 21 = 84/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
6/21 = 6 × 40/21 × 40 = 240/840 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/840 < 240/840 or 4/40 < 6/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40 and 6/21 4/40 and 12/21 4/80 and 6/21 4/40 and 6/42 12/40 and 6/21 4/40 and 18/21 4/40 and 6/63 20/40 and 6/21 4/40 and 30/21 28/40 and 6/21 4/40 and 42/21