Undefined Fractions Worksheets
What is an Undefined Fraction? You have learned about and dealt with fractions a million times. But how about if we tell you that you have not learned enough? One of the types of these fractions is left to be explored. A fraction is an expression that has both a numerator and a denominator. There are three basic types of fractions; Proper, Improper, and Mixed Fractions. But there is another type of fraction known as Undefined fraction. This fraction is derived from proper fraction. This type of fraction is when the denominator of a fraction is utterly minute or very small that it can be rounded off or assumed as zero. However, in such a case, the answer to that fraction is infinity. An example of such undefined fractions would be, 10/ 100 and 4/ 250. Since these fractions are so minute/small that they cannot be evaluated, the can be neglected or approximated to zero, which will have a much higher impact on the numerator, leaving the answer to infinity.

Basic Lesson
Demonstrates how to find the value for a variable that makes a fraction undefined.
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Intermediate Lesson
Explores how to find the value for a variable that makes a fraction undefined with binomials.
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Independent Practice 1
Find the value for x that makes these fractions undefined. The answers can be found below.
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Homework Worksheet
Undefined Fractions problems for students to work on at home. Example problems are provided and explained.
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Solar Logic
Question: What do you get when you take the sun
and divide its circumference by its diameter?
Answer: Pi in the sky!