Definitions Flashcards
1
Q
Real Number
A
any number with a decimal expansion
2
Q
Natural numbers
A
1,2,3,4,
3
Q
Whole numbers
A
0,1,2,3,4,
4
Q
Integers
A
whole numbers and negatives -2,-1,0,1,2,3
5
Q
Rational Numbers
A
All numbers whose decimal expansion either terminate or repeat
or the ratio of two integers
6
Q
Irrational Numbers
A
all real numbers that are not rational
7
Q
Nested Sets
A
we say a group of sets are nested if each set is contained in another set
8
Q
Closure of Addition
A
a+b is a real number
9
Q
Commutative of Addition
A
a+b=b+a
10
Q
Associative of Addition
A
(a+b) +c = a+ ( b+c)
11
Q
Identity of Addition
A
a+0=a
0+a=a
12
Q
Inverse of Addition
A
a+ -a=0
13
Q
Closure of Multiplication
A
ab is a real number
14
Q
Commutative of Multiplication
A
ab=ba
15
Q
Associative of Multiplication
A
(ab)c =a(bc)
