Recognised as Decimal number

-2.15

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

-2.15 is a decimal number equal to -43⁄20. It lies between -3 and -2, and as a percentage it is -215%.

Number properties

Absolute value2.15

SignNegative

Integer part-2

Fractional part0.15

Decimal places2

Floor-3

Ceiling-2

Rounded to nearest-2

Truncated-2

Fractions & ratios

As a fraction-43/20exact

Ratio-43 : 20

As a percentage-215%

Reciprocal-0.4651162791≈

Arithmetic

Double-4.3

Half-1.075

Square4.6225

Cube-9.938375

Cube root-1.2906628807≈

Negation2.15

Representations

Decimal-2.15

Scientific notation-2.15 × 10^0

Exponential-2.15e+0

IEEE 754 binary64 (hex)0xC001333333333333the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0xC009999A32-bit single precision, may lose accuracy

Stored as-2.15the 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-2

To 1 decimal place-2.1

To 2 decimal places-2.15

To 3 decimal places-2.150

To 4 decimal places-2.1500

To 1 significant figure-2

To 2 significant figures-2.1

To 3 significant figures-2.15

To 4 significant figures-2.150

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