décimale

A décimale refers to a number expressed in the decimal numeral system, also known as the base-10 system. This system uses ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. In the decimal system, the position of a digit determines its value. Each position represents a power of 10. For instance, in the number 123.45, the '1' is in the hundreds place (10^2), the '2' is in the tens place (10^1), the '3' is in the ones place (10^0), the '4' is in the tenths place (10^-1), and the '5' is in the hundredths place (10^-2).

Numbers with a decimal point are called decimal numbers. The decimal point separates the whole number part from the fractional part. The digits to the right of the decimal point represent fractions of a whole. For example, 0.5 represents one-half, and 0.25 represents one-quarter. Recurring decimals are numbers where a digit or a sequence of digits repeats indefinitely, such as 1/3 which is approximately 0.333... Terminating decimals are those that have a finite number of digits after the decimal point, such as 0.75. The decimal system is the most commonly used numeral system worldwide.