Recognised as Decimal number

-31.5

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

-31.5 is a decimal number equal to -63⁄2. It lies between -32 and -31, and as a percentage it is -3,150%.

Number properties

Absolute value31.5

SignNegative

Integer part-31

Fractional part0.5

Decimal places1

Floor-32

Ceiling-31

Rounded to nearest-31

Truncated-31

Fractions & ratios

As a fraction-63/2exact

Ratio-63 : 2

As a percentage-3,150%

Reciprocal-0.0317460317≈

Arithmetic

Double-63

Half-15.75

Square992.25

Cube-31,255.875

Cube root-3.1581797988≈

Negation31.5

Representations

Decimal-31.5

Scientific notation-3.15 × 10^1

Exponential-3.15e+1

IEEE 754 binary64 (hex)0xC03F800000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0xC1FC000032-bit single precision, may lose accuracy

Stored as-31.5the 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-32

To 1 decimal place-31.5

To 2 decimal places-31.50

To 3 decimal places-31.500

To 4 decimal places-31.5000

To 1 significant figure-3e+1

To 2 significant figures-32

To 3 significant figures-31.5

To 4 significant figures-31.50

Keep nerding

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