1.3 Flashcards
1
Q
Natural numbers
A
The counting numbers
2
Q
Whole numbers
A
The non negative integers
3
Q
integers
A
whole numbers and their opposites
4
Q
rational numbers
A
any number that you can write in the form a/b where a and b are integers
5
Q
irrational number
A
cannot be expressed in the form a/b
6
Q
real numbers
A
a number that is either rational or irrational
7
Q
counterexample
A
any example that proves a statement false
8
Q
inequality
A
a mathematical sentence that compares the value of two expressions using an inequality symbol
9
Q
opposites
A
two numbers that are the same distance from zero on a number line but lie in opposite directions
10
Q
absolute value
A
its distance from 0 on a number line
