Addition of Integers – Part 2

# Addition of Integers – Part 2

• Addition of two Negative Integers
• Using Number Line
• Using Absolute Values
• Summary
• What’s Next?

In the previous segment, we discussed the addition of two positive integers. In this segment, we will look at the addition of two negative integers.

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## Addition of two negative integers

• The sum of two negative integers is always negative.
• Adding a negative integer decreases the value of a number.
• That is, adding a negative integer is the same as subtraction of its absolute value.
• There are two ways in which two negative integers can be added:
• Using the number line
• Using absolute value

Let us understand each of the method using the following example:

Solution:

(i) Using the number line

Mark -4 on the number line.

That is, move four steps from 0, towards the left.

Next, -2 is to be added.

Adding a negative integer is the same as subtraction of its absolute value.

The absolute value of -2 is 2.

So, ‘add -4 and -2’ is the same as ‘subtract 2 from -4’.

On a number line, moving towards the left means subtraction. Therefore to add -2, we move 2 steps to the left from -4.

## Related content

 Integers Representation of Integers on a Number Line Understanding the Number Line – Part 1 Understanding the Number Line – Part 2 Natural and Whole Numbers – Review Absolute Value Understanding the Concept of Absolute Value Successor and Predecessor of an Integer Ordering of Integers Signs of Integers