We can transform any ordinary fraction (that is, a non-decimal fraction) into a decimal number by dividing the numerator by its denominator. Examples:

Convert in decimal number.

Soon, is 0.75 which is an exact decimal.

Convert in decimal number.

Soon, equals 0.333… which is a simple periodic tithe.

Convert in decimal number.

Soon, equals 0.8333… which is a compound tithing.

Next: Potentiation and Square Root