properties of real numbers Flashcards
1
Q
a+b
A
closure +
2
Q
a + b = b + a
A
commutative +
3
Q
(a + b) + c = a + (b + c)
A
associative +
4
Q
a + 0 = a, 0 + a = a
A
identity +
5
Q
a + (-a) = 0
A
inverse +
6
Q
a (b + c) = ab
A
+ acdistributive + and x
7
Q
ab
A
closure x
8
Q
ab=ba
A
commutative x
9
Q
(ab)c = a(bc)
A
associative x
10
Q
a x 1 = a, 1 x a = a
A
identity x
11
Q
a x 1/a = 1, a (doesn’t equal) 0
A
inverse x
