The absolute value of a real number x is the distance on the number line
between 0 and the point with the coordinate of x. It is denoted by |x|.
If x is any real number then its absolute value is given by
|-x|=-x when x<0
The given number is |-10|
For any real number x is |-x| = |x|
Therefore, |-10| = |10| = 10
Its absolute value is 10.
Therefore, the absolute value of the given number |-10] is 10.