Summary
Integers are whole numbers that can be positive, negative, or zero. The sum of any integer and its opposite is zero.
- Integer — a whole number that can be positive, negative, or zero. Example: +4, -5, 0
- Opposite Integer — an integer that, when added to the original integer, results in zero. Example: 9 and -9
- Positive Integer — a whole number greater than zero. Example: +5
- Negative Integer — a whole number less than zero. Example: -3
- Zero — a neutral integer that is neither positive nor negative. Example: 0
Exam Tips
Key Definitions to Remember
- An integer is a whole number that can be positive, negative, or zero.
- Opposite integers are two integers that add up to zero.
Common Confusions
- Fractions and decimals are not integers.
- Subtracting a negative number is the same as adding a positive number.
Typical Exam Questions
- What is the sum of -3 and +3? 0
- How do you represent -5 on a number line? Move 5 units to the left from zero.
- What is the result of multiplying -2 by -3? +6
What Examiners Usually Test
- Understanding of positive and negative integers on a number line.
- Ability to add and subtract integers correctly.
- Rules for multiplying and dividing integers.