Names of small numbers

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This is a list of the names of small decimal numbers in English.

Table

Summarize
Perspective

The following table lists the names of small numbers used in the long and short scales, along with the power of 10, engineering notation, and International System of Units (SI) symbols and prefixes.[1][page needed] [2][page needed] [3][page needed] [4][5][6][7]

More information Powerof ten, Engineeringnotation [citation needed] ...
Power
of
ten
Engineering
notation

[citation needed]
Short scale
(U.S. and
modern British)
Long scale
(continental Europe,
archaic British, and India)
SI
prefix
SI
symbol
1001One
10−1100×10−3One Tenthdeci-d
10−210×10−3One One-Hundredthcenti-c
10−31×10−3One One-Thousandthmilli-m
10−61×10−6One One-Millionthmicro-μ
10−91×10−9One One-BillionthOne One-Milliardthnano-n
10−121×10−12One One-TrillionthOne One-Billionthpico-p
10−151×10−15One One-QuadrillionthOne One-Billiardthfemto-f
10−181×10−18One One-QuintillionthOne One-Trillionthatto-a
10−211×10−21One One-SextillionthOne One-Trilliardthzepto-z
10−241×10−24One One-SeptillionthOne One-Quadrillionthyocto-y
10−271×10−27One One-OctillionthOne One-Quardilliardthronto-r
10−301×10−30One One-NonillionthOne One-Quintillionthquecto-q
10−331×10−33One One-DecillionthOne One-Quintilliardth
10−361×10−36One One-UndecillionthOne One-Sextillionth
0 1×10−∞ Zero
–1 –1 Negative One
−∞ undefined Negative Infinity
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See also

References

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