Deka is an example.
No, the base for the metric system is ten.
Ten
The metric system
The metric system
A decimal number is a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. Measurement units in the metric system are related to one another by multiples of powers of ten (or 1000).
Units with divisions that are powers of ten are called metric units. This system of measurement makes it easier to convert between different units by simply moving the decimal point. Examples include meters, grams, and liters.
ten
ten.
Metric
Ten.
deci
The metric system is used by scientists because it is based on factors of ten. This makes it easy to convert from one unit of measurement to another.