Compare 1/90 and 21/64
1/90 is smaller than 21/64
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 64 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 90 × 32 = 2880,
1/90 = 1 × 32/90 × 32 = 32/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
21/64 = 21 × 45/64 × 45 = 945/2880 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 32/2880 < 945/2880 or 1/90 < 21/64
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