Math Dictionary / Integer
Integer
An integer is a whole number, its opposite, or zero.
Number SystemGrade 6Grade 7Grade 8GED
What it means
Integers include numbers like -4, -1, 0, 3, and 12. They do not include fractions or decimals.
Also called: whole-number positives and negatives
Examples
| -7 is an integer |
| 0 is an integer |
| 4.5 is not an integer |
Common mistake
A negative number can still be an integer. The word integer does not mean positive only.
Try one
Question: Which number is not an integer: -3, 0, 8, or 2.5?
Show answer
2.5 is not an integer because it has a decimal part.