Final Test Flashcards
A set
a collection of objects that have something in common
A subset
a set that is a part of another set.
Ways to describe a set
- using words
- using a list (sometimes it is impractical to generate)
- using set builder notation (this can be confusing to generate at the beginning)
Finite Sets
the number of elements in a set is a whole number
Infinite Sets
There are unlimited numbers of members
Well defined sets
no uncertainity as to whether an element belongs to that set or not
Difference Between Equal & Equivalent Sets
Equal Sets-same elements. { A, B, C = C, B, A}
Equivalent Sets-same number of elements. ( they can be placed in one-to-one correspondence)
A Venn Diagram
is a visual depiction of the similarities and differences between two different sets and its structure allows it to organize a wide variety of information
There are types of subtraction problems
- Separating
- Comparing
- Part- Part Whole
What are the properties of addition?
- Identity
- Commutative
- Associative
- Closure (with positive whole numbers)
Properties of Multiplication
- Zero
- Identity
- Commutative
- Associative
- Distributive
Partitioning
Size of the group is unknown
dealing out one by one
Repeated subtraction
number of groups is unknown (also referred to as the measurement model)
Multiplication
composing (putting together) equal size groups.
Division
decomposing (breaking apart)
a “whole” into equal size groups.
An estimate
an answer that is close enough to an exact answer to be useable
Closure
closing the equation
Associative
when the sum is the same
Commutative
reverse of where we went
