Recognised as Decimal number

318.5

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

318.5 is a decimal number equal to 637⁄2. It lies between 318 and 319, and as a percentage it is 31,850%.

Number properties

Absolute value318.5

SignPositive

Integer part318

Fractional part0.5

Decimal places1

Floor318

Ceiling319

Rounded to nearest319

Truncated318

Fractions & ratios

As a fraction637/2exact

Ratio637 : 2

As a percentage31,850%

Reciprocal0.0031397174≈

Arithmetic

Double637

Half159.25

Square101,442.25

Cube32,309,356.625

Square root17.8465682976≈

Cube root6.8291996944≈

Negation-318.5

Natural logarithm5.763622475≈

Logarithm base 102.5031094367≈

Representations

Decimal318.5

Scientific notation3.185 × 10^2

Exponential3.185e+2

IEEE 754 binary64 (hex)0x4073E80000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x439F400032-bit single precision, may lose accuracy

Stored as318.5the 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 places319

To 1 decimal place318.5

To 2 decimal places318.50

To 3 decimal places318.500

To 4 decimal places318.5000

To 1 significant figure3e+2

To 2 significant figures3.2e+2

To 3 significant figures319

To 4 significant figures318.5

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