Integers
Integers are positive numbers, negative numbers, or zero .... but NOT a fraction or a decimal.
|
|
Examples of Integers – Positive and Negative Numbers
Example 1: Credits & Debts
One common example of opposites is credits, which are represented by positive numbers, and debts or deficits, which are represented by negative numbers. |
Example 2: Temperature
Measuring temperature is another familiar use for positive and negative numbers. The fixed reference point on the Celsius thermometer is 0o, the temperature at which water freezes. On the Fahrenheit scale, water freezes at 32o. On both scales, temperatures above zero are positive and those below zero are negative. |
Example 3: Sports
In several sports there are special reference points from which it is convenient to measure with positive and negative numbers. In golf this reference point is par, and a score of - 4 represents four strokes below par. In football, the yard line at which play begins is the reference point, and a loss of yardage is referred to as negative yardage. |
Example 4: Time
Scientists often find it convenient to designate a given time as zero time and then refer to the time before and time after as being negative and positive, respectively. This practice is followed in the launching of rockets. If the time with respect to blastoff is -15 minutes, then it is 15 minutes before the launch. |
Example 5: Altitude
Sea level is the common reference point for measuring altitudes. Charts and maps that label altitudes below and above sea level use negative and positive numbers. |