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Set Notation
Unions of Sets
What Set(s) does this # belong in? (W,I,R)
What are the common elements?
Intersections of Sets
100
Set Notation

What does the " ∪ " in A ∪ B represent?
Union
100
Unions of Sets

Write A ∪ B in set notation.
A = {1, 2, 3, 4, 5}
B = {1, 3}
A ∪ B = {1, 2, 3, 4, 5}
100
What Set(s) does this # belong in?

-2
Reals, Integers
100
What are the common elements?

X = {2,3}
Y = {1, 2, 3, 4, 5}
2,3
100
Intersections of Sets

Write A ∩ B in set notation.
A = {1, 2, 3, 4, 5}
B = {1, 3}
A ∩ B = {1, 3}
200
Set Notation

What does the " ∩ " in A ∩ B represent?
Intersection
200
Unions of Sets

Draw and shade a Venn Diagram of A ∪ B
A = {1, 4}
B = {2, 4}
A (/// 1 ///(// 4 //)/// 2 ///) B
200
What Set(s) does this # belong in?

459
Reals, Integers, Wholes
200
What are the common elements?

X = {Burgers, Fries, Coke} Y = {Chicken Nuggets, Fries, Coke, Applesauce}
{Fries, Coke}
200
Intersections of Sets

Draw and shade a Venn Diagram of A ∩ B
A = {1, 4}
B = {1, 3}
A ( 4 (//1//) 3 ) B
300
Set Notation

What symbol do you use for the "Empty Set" ?
{ } or ∅
300
Unions of Sets

Write A ∪ B in set notation.
A = {2, 3, 4, 7, 8}
B = {1, 5, 6, 9}
A ∪ B = {1, 2, 3, 4, 5, 6, 7, 8, 9}
300
What Set(s) does this # belong in?

24.365
Reals
300
What are the common elements?

X = The set of Real Numbers.
Y = The set of Whole Numbers
The set of Whole Numbers
300
Intersections of Sets

Write A ∩ B in set notation.
A = {1, 2, 3, 4, 5}
B = {6, 8, 10}
A ∩ B = { }
400
Set Notation

What is the name for the set that contains every element.
The Universal Set
400
Unions of Sets

Draw and shade a Venn Diagram of A ∪ B
A = {1, 2, 3, 4, 5}
B = {1, 3, 6, 9}

AND write the answer in set notation.
A (/// 2, 4, 5 ///(// 1, 3 //)/// 6, 9 ///) B

A ∪ B = {1, 2, 3, 4, 5, 6, 9}
400
What Set(s) does this # belong in?

-9.876
Reals
400
What are the common elements?

X = {-2,-1,0,1,2,}
Y = The set of Integers
{-2,-1,0,1,2,}
400
Intersections of Sets

Draw and shade a Venn Diagram of A ∩ B
A = {1, 2, 3, 4, 5}
B = {1, 3, 6, 9}

AND write the answer in set notation.
A ( 2, 4, 5 (// 1, 3 //) 6, 9 ) B

A ∩ B = {1, 3}
500
Set Notation

Draw and shade Venn Diagram representing the relationship
∪ - ∩
(//////////( ) ///////////)
500
Unions of Sets

Draw and shade a Venn Diagram representing the relationship X ∪ ∅
X = {1,2,3}
X (//////////)
500
What Set(s) does this # belong in?

-18 6 = ?
Reals, Integers
500
What are the common elements?

The set of classes Mrs. Backstrom teaches.
The set of classes Mr. Schwartz teaches.
Standards Math, Geometry
500
Intersections of Sets

Write two sets X and Y that satisfy, X ∩ Y = ∅
ex. X = {1,3,5}, Y = {2,4,6}