The term “K” is not only a metric symbol for the prefix ‘kilo’, but is also used to indicate the equivalent in money of a unit of weight. For example, the 5 k word is used in 5k races to mean “the amount of money paid for a fifth of a kilogram” and, thus, is a good way to measure how much you’re earning for running a 5k.

## It’s a factor of 1000 as in kilogram

If you are not familiar with the word “kilo”, you are not alone. This is a term that refers to 1000 grams. The word kilo comes from the Greek word khilioi. It also refers to the thousand in the International System of Units. However, it can also refer to money.

Kilo is a unit of measurement in the International System of Units (SI). Kilo is used in the metric system as a prefix for the decimal unit. For example, a kilometre is a measure of one thousand meters. Another way to understand kilo is to think of it as a multiplier. For instance, if 5000 grams are added to a kilogram, then you have 5 kilo. In the case of a billion, you would write the number as G, or Giga.

## It’s a constant of variation

If you have ever been in a grocery store, you may have noticed the cashier’s pay is directly related to how many hours she worked. A longer shift means more money.

You may have also seen the constant of proportionality. This is a formula defining the slope of a line. Alternatively, it could be any real number, such as k. Whether the term is linear or quadratic, it will only make sense in the context of the situation.

The same concept applies to the inverse. When x increases, y will decrease, but when x decreases, y will increase.

Similarly, the area of a circle is directly proportional to its diameter. Similarly, the radius of a circle is equal to half its diameter.

## It’s a metric symbol for the prefix ‘kilo’

The word kilo comes from the Greek word khilioi which means “thousand”. In the metric system, k is a decimal unit prefix. It denotes the multiple of one thousand (103).

Kilo is the only SI unit with a prefix. Similarly, the base unit kilogram has the prefix ‘kilo’. A kilogram is a mass of 1000 grams.

The metric prefix kilo is used in telecommunications and computing. Kilo is also a base unit of measure in the International System of Units. Metric units are divided into smaller, submultiples. These smaller submultiples are represented by kilo- prefixes. Unlike decimal multiplicative prefixes, metric prefixes are constant through the metric system.

Several prefixes are derived from Greek and Latin numbers. However, the SI prefixes have their own set of symbols. Each SI prefix is based on a specific combination of values.