Operations on Integers

Mathematics — First Preparatory

The set of integers

The set of integers Z = {…, −3, −2, −1, 0, 1, 2, 3, …} includes positive numbers, negative numbers and zero.
On the number line, negative numbers lie to the left of zero and positive numbers lie to the right.
A number that lies further to the right is greater.
For example, −2 is greater than −5, and 3 is greater than −1.
The absolute value of a number is its distance from zero.
The absolute value of −7 is 7.

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