Absolute Value of a Number

Lesson 1 The Absolute Value of a Number

What you will learn here is all about the absolute value of a number.

A line is made up of infinite number of points. For every point on the line, there corresponds a number with value and direction with respect to zero as reference point.

In the number line, the numbers to the right of zero are positive and to its left are negative. These positive numbers, zero and negative numbers comprise the set of integers, also known as signed numbers and directed numbers. Based on our BG Moves Activity, these numbers have absolute value, which is sometimes positive or zero, since it’s the distance of the number from zero on the number line.

The absolute value of a given number is written or being symbolized by using two vertical bars or two straight lines. |4| is read as “the absolute value of positive 4 or simply the absolute value of 4”. Its absolute value is 4 because it is 4 spaces/units from 0 on the number line. We can rewrite it as |4|= 4. |−4| is read as ‘the absolute value of negative 4”. Its absolute value is 4 because it is 4 spaces/units from 0 on the number line. Rewriting, it is |−4|= 4.

From the very beginning, it is always being stated that the absolute value is being described as the distance of a number from 0 which is the reference point on a number line without considering which direction from zero the number lies. The absolute value of a number is always positive or zero.

From the very beginning, it is always being stated that the absolute value is being described as the distance of a number from 0 which is the reference point on a number line without considering which direction from zero the number lies. The absolute value of a number is always positive or zero.

Thank your for reading my book. Continue with the module to see the examples