Page 37 - Math Booklet Prep1first part1_Neat
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Operations on Integers
Set of integers is denoted by Z where:
Z = {……, –3 , –2 , –1 , 0 , 1 , 2 , 3 ………}
set of positive integers = {1 , 2 , 3 , ……..}
set of negative integers{–1 , –2 , –3 , ……..}
Remark
• Zero is not positive or negative but it is an integer.
• The set {0 , 1 , 2 , 3 , ……..} is a set of natural numbers N and it
is also called the set of non-negative integers.
• The set {0 , –1 , –2 , –3 , ……..} is called the set of non-positive
integers.
• Any negative number is less than zero.
• Any positive number is more than zero.
• Zero is neither positive nor negative
• Any positive number is greater than any negative number
• Set of natural number is part of the set of
integers Z
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