Dividing by zero

The  exercise appears under the 7th Grade Math Mission. This exercise practices recognizing when division by zero occurs.

Types of Problems
There is one type of problem in this exercise:


 * 1) Select the undefined expressions: This problem provides a list of expressions some of which are undefined. The student is asked to select all of the options that are undefined.Dbz1.png

Strategies
An ability to perform arithmetic well is the only skill that is needed to do this exercise correctly.
 * 1) The only undefined cause on these problems will be a possible divide by zero, see if any of the denominators are zero.
 * 2) Division by zero is impossible because you cannot split into zero groups.
 * 3) 0/0 is also undefined, although it is "special" and is called indeterminant.

Real-life Applications

 * 1) Division by zero is undefined and will always be undefined. An ability to recognize this helps to catch extraneous solutions in later math classes.
 * 2) Limits in precalculus can be used to find the limit of expressions that are indeterminant.