Understandiing integers
Integers are positive and negative whole numbers, including zero. That is, the intergers are ...,-4, -3, -2, -1, 0, 1, 2, 3, 4,...
Integers to the left of
zero are less than zero.
They are negative. |
Zero is neither negative nor positive. |
Integers to the right of
zero are greater than zero.
They are positive. |
Positive numbers |
A positive number can be indicated by placing a plus sign (+) in front of the number. For example, we can write +3 instead of 3. Both +3 and 3 represent "positive 3". Usually, however, the plus sign is omitted and it is understood that the number is a positive number. |
Negative numbers |
A negative number is indicated by placing a negative sign (-) in front of the number. For example, the number -2 is read "negative two" |