To find one fifth of a number we divide the number by five. Then, to find four fifths of a number, we first find one fifth of that number and then multiply this by four.
The number 4.5 is a mixed decimal. It can never be expressed as a whole number because it has a fractional part. The . 5 represents 1/2.The number 4.5 is a mixed decimal. It can never be expressed as a whole number because it has a fractional part. The . 5 represents 1/21/2One half is the irreducible fraction resulting from dividing one by two (2) or the fraction resulting from dividing any number by its double. One half often appears in mathematical equations, recipes, measurements, etc. Half can also be said to be one part of something divided into two equal parts.https://en.wikipedia.org › wiki › One_halfOne half - Wikipedia.
How do you find a fraction of a number?
To work out a fraction of a number, all you need to do is divide that number by the denominator of the fraction, then multiply your result by the numerator of the fraction. For instance, if we wanted to find out what 3/8 of 24 is, we would divide 24 by 8 (the denominator of the fraction).26 Jan 2021