1.3: Exploring Real Numbers Flashcards
1
Q
natural numbers
A
1, 2, 3, …
2
Q
whole numbers
A
0, 1, 2, 3, …
3
Q
integers
A
… -2, -1, 0, 1, 2, …
4
Q
rational number
A
any number that you can write in the form a/b, where a and b are integers and b cannot equal zero.
5
Q
irrational number
A
cannot be expressed in the form a/b, where a and b are integers.
6
Q
real numbers
A
both rational 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 zero on a number line but lie in opposite directions
10
Q
absolute value
A
distance from zero on a number line
