Recognised as Decimal number

-100.5

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

-100.5 is a decimal number equal to -201⁄2. It lies between -101 and -100, and as a percentage it is -10,050%.

Number properties

Absolute value100.5

SignNegative

Integer part-100

Fractional part0.5

Decimal places1

Floor-101

Ceiling-100

Rounded to nearest-100

Truncated-100

Fractions & ratios

As a fraction-201/2exact

Ratio-201 : 2

As a percentage-10,050%

Reciprocal-0.0099502488≈

Arithmetic

Double-201

Half-50.25

Square10,100.25

Cube-1,015,075.125

Cube root-4.6493119574≈

Negation100.5

Representations

Decimal-100.5

Scientific notation-1.005 × 10^2

Exponential-1.005e+2

IEEE 754 binary64 (hex)0xC059200000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0xC2C9000032-bit single precision, may lose accuracy

Stored as-100.5the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written4counted from the digits as typed, not from the value

To 0 decimal places-101

To 1 decimal place-100.5

To 2 decimal places-100.50

To 3 decimal places-100.500

To 4 decimal places-100.5000

To 1 significant figure-1e+2

To 2 significant figures-1e+2

To 3 significant figures-101

To 4 significant figures-100.5

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