Integers

1.1  Integers

 Definition Positive and negative whole numbers including $$0$$.

Positive numbers:

• Numbers written with the '$$+$$' sign or without any sign.
• Examples: $$+12, 4, +7, 1$$
• Positive integers are integers that have a value greater than $$0$$.

Negative numbers:

• Numbers written with the '$$-$$' sign.
• Examples: $$-6, -2, -15, -27$$
• Negative integers are integers that are lower than $$0$$.

 Example Determine whether the following numbers is an integer. (i) $$\dfrac{7}{2}$$ (ii) $$6.8$$ (iii) $$-12$$ (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.

Integers on a number line:

• On a number line, the numbers in the positive direction are always greater than the numbers in the negative direction.

Integers in order:

• A positive number always has a larger value than a negative number.

Integers

1.1  Integers

 Definition Positive and negative whole numbers including $$0$$.

Positive numbers:

• Numbers written with the '$$+$$' sign or without any sign.
• Examples: $$+12, 4, +7, 1$$
• Positive integers are integers that have a value greater than $$0$$.

Negative numbers:

• Numbers written with the '$$-$$' sign.
• Examples: $$-6, -2, -15, -27$$
• Negative integers are integers that are lower than $$0$$.

 Example Determine whether the following numbers is an integer. (i) $$\dfrac{7}{2}$$ (ii) $$6.8$$ (iii) $$-12$$ (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.

Integers on a number line:

• On a number line, the numbers in the positive direction are always greater than the numbers in the negative direction.

Integers in order:

• A positive number always has a larger value than a negative number.