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Naming very small numbers is the same as naming very big numbers, but with one important difference. There is a minus sign over what the 10 in the formula is raised to. So if one wanted to write 0.007 in shorthand form, they would write it 7 x 10-3 since 7 is the third digit after the decimal point (the zero in front of the decimal point doesn't count). Naming a very small number with lots of different numbers inside it is the same as doing it with a very big number, but again with that one difference of the minus sign. So 0.0000452 would become 4.52 x 10-5 (0.0000452 --> 4.52 x 0.00001 --> 4.52 x 10-5).
[change] Some Examples
0.00000000009 |
= |
9 x 10-11 |
0.000678 |
= |
6.78 x 10-4 |
0.000000535645 |
= |
5.35645 x 10-7 |
[change] Names for Small Numbers
|
American Name |
European Name |
100 |
One |
One |
10-1 |
Tenth |
Tenth |
10-2 |
Hundredth |
Hundredth |
10-3 |
Thousandth |
Thousandth |
10-4 |
Ten Thousandth |
Ten Thousandth |
10-5 |
Hundred Thousandth |
Hundred Thousandth |
10-6 |
Millionth |
Millionth |
10-9 |
Billionth |
Milliardth |
10-12 |
Trillionth |
Billionth |
10-15 |
Quadrillionth |
Billiardth |
10-18 |
Quintillionth |
Trillionth |
10-21 |
Sextillionth |
Trilliardth |
10-24 |
Septillionth |
Quadrillionth |
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