onehundredth

One hundredth is a fractional concept representing one part of a hundred equal parts. It can be expressed as the fraction 1/100, the decimal 0.01, or as a percentage equal to 1 percent. The term also functions as an ordinal, indicating the position after the 99th item in a sequence, or “the hundredth” in lists.

In mathematics, 1/100 is a unit fraction, and because 100 factors as 2^2 × 5^2, its decimal form terminates at two places: 0.01. This makes the hundredth a common reference point in calculations involving precision and rounding.

In decimal notation and place value, the hundredth place is the second digit to the right of the decimal point. Each unit can be subdivided into hundredths, thousandths, and beyond, with hundredths representing 1/100 of a unit. For example, 0.01 of a meter is 1 centimeter.

The SI prefix centi- denotes a factor of 10^-2, reflecting the same idea as a hundredth. This prefix appears in units such as centimeter (cm), centigram (cg), and centisecond (cs). The concept of a hundredth also appears in everyday measurements, such as one hundredth of a dollar being one cent.

Overall, the hundredth is a foundational unit in fractions, decimals, and metric prefixes, serving as a standard subdivision of a whole in mathematics and measurement.