Compare 21/28 and 18/10
1st number: 21/28, 2nd number: 1 8/10
21/28 is smaller than 18/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
18/10 = 18 × 14/10 × 14 = 252/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/140 < 252/140 or 21/28 < 18/10
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