Recognised as Decimal number

-6.5

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

-6.5 is a decimal number equal to -13⁄2. It lies between -7 and -6, and as a percentage it is -650%.

Number properties

Absolute value6.5

SignNegative

Integer part-6

Fractional part0.5

Decimal places1

Floor-7

Ceiling-6

Rounded to nearest-6

Truncated-6

Fractions & ratios

As a fraction-13/2exact

Ratio-13 : 2

As a percentage-650%

Reciprocal-0.1538461538≈

Arithmetic

Double-13

Half-3.25

Square42.25

Cube-274.625

Cube root-1.8662555784≈

Negation6.5

Representations

Decimal-6.5

Scientific notation-6.5 × 10^0

Exponential-6.5e+0

IEEE 754 binary64 (hex)0xC01A000000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0xC0D0000032-bit single precision, may lose accuracy

Stored as-6.5the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written2counted from the digits as typed, not from the value

To 0 decimal places-7

To 1 decimal place-6.5

To 2 decimal places-6.50

To 3 decimal places-6.500

To 4 decimal places-6.5000

To 1 significant figure-7

To 2 significant figures-6.5

To 3 significant figures-6.50

To 4 significant figures-6.500

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