Recognised as Decimal number

-20.8

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

-20.8 is a decimal number equal to -104⁄5. It lies between -21 and -20, and as a percentage it is -2,080%.

Number properties

Absolute value20.8

SignNegative

Integer part-20

Fractional part0.8

Decimal places1

Floor-21

Ceiling-20

Rounded to nearest-21

Truncated-20

Fractions & ratios

As a fraction-104/5exact

Ratio-104 : 5

As a percentage-2,080%

Reciprocal-0.0480769231≈

Arithmetic

Double-41.6

Half-10.4

Square432.64

Cube-8,998.912

Cube root-2.7501377341≈

Negation20.8

Representations

Decimal-20.8

Scientific notation-2.08 × 10^1

Exponential-2.08e+1

IEEE 754 binary64 (hex)0xC034CCCCCCCCCCCDthe exact 64-bit pattern stored

IEEE 754 binary32 (hex)0xC1A6666632-bit single precision, may lose accuracy

Stored as-20.8the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written3counted from the digits as typed, not from the value

To 0 decimal places-21

To 1 decimal place-20.8

To 2 decimal places-20.80

To 3 decimal places-20.800

To 4 decimal places-20.8000

To 1 significant figure-2e+1

To 2 significant figures-21

To 3 significant figures-20.8

To 4 significant figures-20.80

Keep nerding

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