Teacher/User Name: DEMO Name:__________________________
Practice Problems Period: ________ Date: ____________

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All rights reserved. Copyright 1998 Triple Threat Inc.


1) Write the inverse:
If apples are not on sale then today is not Sunday.

2) Write the biconditional:
If Charlie doesn't like football then the cat is white.
3) Write the biconditional:
If yesterday was not Monday then it is not raining.

4) Write the contrapositive:
If Wendy does not have a red hat then the pen is not blue.
5) Write the biconditional:
If it is not 1:00 pm then the dog needs to go out.

6) Write the contrapositive:
If Helen doesn't do homework after dinner then it is raining.

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