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Recognised as Fraction

3/21

  • Proper fraction
  • Simplifies to 1/7
  • 0.142857

3/21 is a proper fraction equal to 0.1428571429, or 14.285714%. In lowest terms it is 1/7. Its decimal expansion recurs.

Value

As a decimal0.142857142857
As a percentage14.28571429%
Simplified1/7
Reciprocal21/3
Decimal expansionRecurringthe denominator has a prime factor other than 2 or 5

Numerator & denominator

Numerator3
Denominator21
Greatest common divisor3
Lowest common multiple21
Numerator is primeYes
Denominator is primeNo
CoprimeNono shared factor above 1

Equivalent fractions

× 22/14
× 33/21
× 44/28
× 55/35
× 66/42
× 1010/70

Arithmetic

Double2/7
Half1/14
Squared1/49
Plus one8/7
Minus one-6/7
Square root0.377964473

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Every value on this page was computed from “3 over 21” by Nerdulator’s maths engine. Nothing here was retrieved from a database of answers or written by a model.