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| 1.1 |
Integers |
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Definition |
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Positive and negative whole numbers including \(0\).
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| Positive numbers: |
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- Numbers written with the '\(+\)' sign or without any sign.
- Examples: \(+12, 4, +7, 1\)
- Positive integers are integers that have a value greater than \(0\).
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| Negative numbers: |
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- Numbers written with the '\(-\)' sign.
- Examples: \(-6, -2, -15, -27\)
- Negative integers are integers that are lower than \(0\).
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Example |
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Determine whether the following numbers is an integer.
(i) \(\dfrac{7}{2}\)
(ii) \(6.8\)
(iii) \(-12\)
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(i) \(\dfrac{7}{2}\) is not an integer because it is a fraction.
(ii) \(6.8\) is not an integer because it is a decimal.
(iii) \(-12\) is an integer.
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| Integers on a number line: |
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- On a number line, the numbers in the positive direction are always greater than the numbers in the negative direction.
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| Integers in order: |
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- A positive number always has a larger value than a negative number.
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