Ordering numbers is an arrangement of the numbers in a sequence. The sequence of the numbers can be in ascending order or descending order. The ascending order is the arrangement of the numbers or alphabet from smallest values to biggest or greatest. The descending order is the arrangement of the numbers or alphabet from the greatest or biggest values to the smallest.

A fraction is a numerical value which is used to define part of a whole. Percentage can be defined as a fraction that has a denominator of 100.

Fractions are numbers that represent less than a whole but more than zero. They can be expressed as a part of a number or a part out of 10, 100, 1,000 and so on (base 10).

Simplifying fractions makes fractions easier to read and easier to continue to manipulate with operators. For example, 4/8 can be simplified to 1/2.

A fraction consists of two numbers that are written one above the other and are separated by a horizontal line. The number present above the line, is called the ‘numerator’ whereas the number present below the horizontal line, is the denominator.  A denominator represents the total number of equal parts into which something needs to be divided.

A recurring decimal number are digits that do not end with zero but are repeated at the same periodic interval. A non-recurring decimal number are digits that do not end with zero, and they do not get repeated after any periodic interval.