1.3 Flashcards
1
Q
natural number
A
1,2,3,….
2
Q
whole numbers
A
0,1,2,3,4,5,6,7,8,9,……
3
Q
intergers
A
-2, -1, 0, 1, 2,……
4
Q
rational numbers
A
any number that you can write in the form of a/b where a and b are integers and b=/ 0
5
Q
irrational number
A
cannot be expressed in the form a/b, where a and b are integers
6
Q
real numbers
A
rational numbers and irrational numbers
7
Q
counterexample
A
any example that proves a statement false
8
Q
inequality
A
mathematical sentence that compares the value of two expressions using an inequality symbol such as < or >
9
Q
opposites
A
two numbers that are the same distance from 0 on a number line but lie in opposite directions
10
Q
absolute value
A
number is its distance from 0 on a number line
