Recognised as Decimal number

-0.0009

Negative
Decimal
4 d.p.
Exact fraction
1 s.f.

-0.0009 is a decimal number equal to -9⁄10,000. It lies between -1 and 0, and as a percentage it is -0.09%.

Number properties

Absolute value0.0009

SignNegative

Integer part0

Fractional part0.0009

Decimal places4

Floor-1

Ceiling0

Rounded to nearest0

Truncated0

Fractions & ratios

As a fraction-9/10,000exact

Ratio-9 : 10,000

As a percentage-0.09%

Reciprocal-1,111.1111111111≈

Arithmetic

Double-0.0018

Half-0.00045

Square8.1 × 10^-7

Cube-7.29 × 10^-10

Cube root-0.0965489385≈

Negation0.0009

Representations

Decimal-0.0009

Scientific notation-9 × 10^-4

Exponential-9e-4

IEEE 754 binary64 (hex)0xBF4D7DBF487FCB92the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0xBA6BEDFA32-bit single precision, may lose accuracy

Stored as-0.0009the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written1counted from the digits as typed, not from the value

To 0 decimal places-0

To 1 decimal place-0.0

To 2 decimal places-0.00

To 3 decimal places-0.001

To 4 decimal places-0.0009

To 1 significant figure-0.0009

To 2 significant figures-0.00090

To 3 significant figures-0.000900

To 4 significant figures-0.0009000

Keep nerding

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