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Fraction

-4/10

  • Proper fraction
  • Simplifies to -2/5
  • -0.4

-4/10 is a proper fraction equal to -0.4, or -40%. In lowest terms it is -2/5. Its decimal expansion terminates.

Value

As a decimal-0.4
As a percentage-40%
Simplified-2/5
Reciprocal10/-4
Decimal expansionTerminatingthe denominator has only 2s and 5s as prime factors

Numerator & denominator

Numerator-4
Denominator10
Greatest common divisor2
Lowest common multiple20
Numerator is primeNo
Denominator is primeNo
CoprimeNono shared factor above 1

Equivalent fractions

× 2-4/10
× 3-6/15
× 4-8/20
× 5-10/25
× 6-12/30
× 10-20/50

Arithmetic

Double-4/5
Half-2/10
Squared4/25
Plus one3/5
Minus one-7/5
Square root0.632455532≈

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Every value on this page was computed from “-4 over 10” by Nerdulator’s maths engine. Nothing here was retrieved from a database of answers or written by a model.