Natural Numbers

1
Natural Numbers

• The Natural or counting numbers are denoted by N
  and are defined by

2
Integers

• Integers are denoted by the letter Z and are
  defined by the following set

3
Rational Numbers

• The set of Rational numbers is denoted by the
  letter Q and is given by

4
Rule for multiplying or dividing two signed
numbers

• If the signs of the two numbers is the same, the
  result is positive
• If the signs of the two numbers are different,
  the result is negative

5
Absolute Value

• The absolute value of a number is always
  non-negative.
• Read through examples 5 9 on pages 7-11 in the
  text