Conditional Statements 2-1A
What is a
conditional
statement?
What two parts
make up a
conditional
statement?
Carter’s Little Liver Pills
What claim is
made in this
advertisement?
Conditional Statements
• Her condition improved each day she
exercised.
• Mom said I could go to the mall on one
condition.
• If I taped my ankle each morning, then the
condition of it would improve.
In mathematics, statements in if-then form
are called conditional statements.
Parts of a Conditional Statement
• I wrote my hypothesis for my Science Fair
project.
• The experiment proved my hypothesis
wrong.
• I had a good conclusion at the end of my
English paper.
• I came to the conclusion that I lost my
notebook.
Parts of a Conditional Statement
Hypothesis—the if part of a conditional
statement.
Conclusion—the then part of a conditional
statement.
Identify the Hypothesis and the
Conclusion
If you use Carter’s Little Liver Pills, then you
will have no more sick headaches.
Hypothesis: You use Carter’s Little Liver
Pills
Conclusion: You will have no more sick
headaches.
The words if and then are not part of the
hypothesis or the conclusion.
Write a Conditional Statement
Hypothesis: You talk on the telephone more
than one hour per night.
Conclusion: Your grade will drop one letter.
Conditional statements are not always in
if-then form, but any statement can be
rewritten in that form.
It is easier to identify the hypothesis and
conclusion when it is written in if-then
form.
Do Television commercials use
Conditional Statements?
True or False?
For a conditional statement to be true, the
conclusion must be true whenever the
hypothesis is true. A conditional is false only
if there is a case in which the hypothesis is
true and the conclusion is false.
If two numbers are both odd, then their sum is
odd.
The condition is false because the conclusion
is false even though the hypothesis is true.
Venn Diagrams
If an animal
is a collie,
then it is a
dog.
If Shep is a
collie, then
Shep is a
dog.
Dogs
Collies
Shep
Assignment 2-1A
Page 91,
1-13,
25-32