Worksheet

1. WORKSHEET
2011-2012
Intersection and Union
Learning Objectives:
By discussions, students are able to:
1.Understanding the definition about intersection
2.Determine the intersection of sets
3.Understanding the definition about union
4.Determine the union of sets
Group Name:
1................................................
2...............................................
3...............................................

2. Set A
Apple Pear Strawberry Kiwi Banana
Set B
Orange Apple Kiwi Avocado Mango
Set C
Asparagus Brocoli Tomato Cauliflower
Set D
Kangkoong Cabbage Mustard
Is there element of
set A and set B
which same? If yes,
write the elements!
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Is there element of
set C and set D
which same? If yes,
write the elements!

3. .............................................................
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CONCLUSION:
Intersection of two set is...................................................
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From all the quetions you
have answered. What can
you conclude?
Let: A = {1, 2, 3, 4, 5}; B = {3, 5}
Is there element of set A
and set B which same? If
yes, write the elements!
Let:
E = {Even natural numbers which are less than 10};
F = { Odd natural numbers which are less than 10}
Is there element of set E and set F which
same? If yes, data the elements!

4. Set X
Dog Rabbit Chiken lizard
Set Y
Bird Duck Cat
Set P
Daisy Flowers Sunflowers Lotus Rose
Set Q
Sunflowers Rose Tulip Jasmines
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Combine all the
elements of X and Y?
Combine all the
elements of P and Q?

5. EXERCISES
1. If K = set of natural numbers not greater than 7 and
L = set odd natural numbers not greater than 7
Determine K  L by listing its members!
2. Let A = { 1, 2, 3, 4, 5}
B = {3, 5, 6, 7}
Determine K  L by listing its members!
3. Let M = set of prime numbers between 1 and 10
N = set of square numbers between 1 and 10
Determine M  N by listing its members!
Determine M  N by listing its members!
CONCLUSION:
Union of two set is.................................................................
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From all the quetions you
have answered. What can
you conclude?
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6. ASSIGNMENT
1. Given:
K = set of square numbers less than 50
L = set of multiples of 4 less than 50
M = set of multiples of 5 less than 50
By all the elements, find:
a. K  L
b. K  M
c. L  M
2. Given:
A = {x x ≤ 5, x is a natural number}
B = {x 3 < x < 8, x is a natural number}
C = {x 5 ≤ x ≤ 10, x is a natural number}
By listing the elements, determine:
a. A  B
b. A  C
c. B  C