Compare 4/56 and 21/81
4/56 is smaller than 21/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 56 × 81 = 4536,
4/56 = 4 × 81/56 × 81 = 324/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
21/81 = 21 × 56/81 × 56 = 1176/4536 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 324/4536 < 1176/4536 or 4/56 < 21/81
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