Drexel dragonThe Math ForumDonate to the Math Forum

Ask Dr. Math

Middle School Archive


This page:
  fractions/percentages checkmark

  Dr. Math

See also the
Dr. Math FAQ:

Internet Library:

  fraction help


About Math

   factoring expressions
   graphing equations

   factoring numbers


     conic sections/
   3D and higher



Number Sense
   factoring numbers
   negative numbers
   prime numbers
   square roots

Word Problems

Browse Middle School Fractions & Percentages
Stars indicate particularly interesting answers or good places to begin browsing.

Selected answers to common questions:
    Finding a least common denominator (LCD).
    Dividing fractions.
    Comparing/ordering fractions; equivalent fractions.
    Reducing/simplifying fractions.
    Improper fractions and mixed numbers.
    Converting fractions to/from decimals.
    Fractions and repeating decimals.
    Finding a percentage.
    Percentage increase/decrease.

Figuring Out Fractions [04/28/2004]
I need help with adding and subtracting fractions, especially mixed numbers and equivalent fractions.

Filling a Pool [07/28/1997]

Finding 465 Percent [9/14/1996]
What is 465 percent of 12?

Finding a Common Denominator [02/21/2002]
Find a common denominator for each pair of fractions: 3/4,5/8; 3/4,7/ 10; 5/6,3/5; them write equivalent fractions.

Finding a Fraction that Equals an Unending Number [07/08/2003]
Is there a way to find if there is a fraction that equals 0.777777...?

Finding Common Denominators [06/25/2001]
What is the best way to find a common denominator?

Finding Fractions between Fractions [01/08/2002]
What are four fractions between 1/3 and 1/2?

Finding Fractions on a Ruler [08/16/1999]
How can I find measurements like 7/8" or 5/16" on a ruler?

Finding Percentages on a Calculator [06/22/2006]
How does the percent key on a calculator work? How do I use it to find a percent of a number?

Finding Sale Price [03/01/2002]
We are studying how to find the sale price by subtracting the discount from the regular price.


Finding the LCM of Several Numbers [11/06/2003]
Do the numbers 65, 55, 25, and 35 have a common denominator?

Flipping and Switching Fractions [01/18/2002]
I need to solve the following: n/2=5/10; 1/n=5/10; 1/2=n/10; 1/2=5/n.

Formula to Calculate Percent Increase [01/31/2005]
I want to compare two figures and show the percent increase that has been made. For example, if 55 has increased to 75, what percentage increase is that?


Fraction Division Diagrams [04/21/1999]
Diagram 1 divided by 1 1/2.


Fraction Operations Explained [11/23/2003]
Addition, subtraction, multiplication and division of fractions are explained through examples and helpful comments.

Fraction or Decimal? [06/23/1998]
Which is more precise, a fraction or a decimal - for instance, 1/3 or 0.33?

Fraction or Decimal Form? [07/30/2002]

Fractions and Common Denominators [06/04/2001]
Why do you need a common denominator to add fractions, but not to multiply them?

Fractions and Cross Multiplication [07/14/1998]
When do you cross-multiply in solving fractions?

Fractions and School Enrollments [02/26/2003]

Fractions for Repeating Decimals [5/14/1996]
Convert 3.04050505.... into a fraction.

Fractions in Simplest Form - When? [11/29/2001]
Should fractions always be reduced to their simplest form? Why or why not?

Fractions: On the Order of Operations and Simplifying [02/27/2010]
A student wonders if the vinculum and solidus grouping symbols obviate the need for the order of operations.

Fractions Table [06/20/1998]
Could you help me locate a math table for fractions to the 16th's?

Fractions with Exponents [01/29/2001]
I need help with questions like (-3x^2 y^2)^-2/(xyz)^-2.

Fraction Tutorials [04/28/1997]
Do you know of tutorials for multiplying fractions, adding improper fractions, and working with mixed number fractions?


Greatest Common Factor (GCF) [04/13/1999]
How do you find the greatest common factor?

History of the Fraction Bar [09/01/2005]

How Can Division Result in an Increase? [10/29/2003]
How is it possible for division to give you a larger number, instead of a smaller one?




How Much of a Total Price Is the Tax? [10/20/2003]
If an item has been purchased and all you know is the total cost for the item and tax, how can you determine how much tax was charged?

How Old Did This Man Live to Be? [02/23/1998]
A word problem involving fractions.

How to Divide Fractions? [11/6/1994]

How to Multiply Fractions [9/6/1996]
I'm having trouble multiplying fractions.


Search the Dr. Math Library:

Search: entire archive just Middle School Fractions

Find items containing (put spaces between keywords):
Click only once for faster results:


parts of words whole words

[Privacy Policy] [Terms of Use]


© 1994-2014 Drexel University. All rights reserved.