Ask Dr. Math Elementary Archive

Dr. Math Home || Elementary || Middle School || High School || College || Dr. Math FAQ

 TOPICS This page:   fractions/decimals    Search   Dr. Math See also the Dr. Math FAQ:   fractions/decimals   percentages Internet Library:   fractions/decimals   percents T2T FAQ:   fraction help ELEMENTARY Arithmetic    addition    subtraction    multiplication    division    fractions/decimals Definitions Geometry    2-dimensional      circles      triangles/polygons    3D and higher      polyhedra Golden Ratio/ Fibonacci Sequence History/Biography Measurement    calendars/      dates/time    temperature    terms/units Number Sense/ About Numbers    infinity    large numbers    place value    prime numbers    square roots Projects Puzzles Word Problems Browse Elementary Fractions & Decimals Stars indicate particularly interesting answers or good places to begin browsing. 33 1/3 Percent as a Fraction [08/03/2003] I need help turning percents like 33 1/3%, 2.5%, and other percents like that into fractions. (9/2)/(3/4): A Picture [03/27/2003] We were trying to find a division fraction question and everything we came up with turned into a multiplication fraction problem. Why is that? Adding and Subtracting Fractions [10/25/1999] Can you help me learn to add and subtract fractions? Adding and Subtracting Fractions [03/05/2002] Why don't we add or subtract the denominators? Adding Decimals [05/26/1998] I can't figure this out: 894.56 + 4563.5 = ? Adding Fractions [08/13/1997] Sally ate 1/8 of a cake and her sister ate 3/8 of it. What fraction did they eat altogether? Adding Fractions [01/06/2003] My problem is 3/4 + 1/6. The common denominator is 12 but it says to build up my numerator to 9/12 + 2/12 = 11/12. I don't understand how they get 9 and 2 for numerators. Adding Mixed Numbers [04/13/1999] How do you add mixed numbers without renaming? Adding, Subtracting, Multiplying, Dividing Fractions [6/7/1996] I am ten years old and I don't understand lower-term fractions. Cancelling Fractions [03/06/2002] How do I cancel this problem: 1/5 x 40/1 x 1/2 ? Changing Decimals to Fractions and Reducing [12/12/2002] Could you please help me to understand, in the simplest way, how to write a decimal as a lowest-term fraction or mixed number? Comparing Fractions [08/04/1999] How do you place fractions in descending or ascending order? Comparing Fraction Size: Two Methods [10/24/2001] What fraction is greatest, 5/13, 2/5, or 7/15? Congruent Fractions [04/03/1997] What are congruent fractions? Converting a Long Decimal to a Fraction [04/11/2002] If I have 74/13 and I want to reduce it to a mixed number, when I divide 74 by 13 I get a long mixed decimal, 5.6923076. How do I get from 5.6923076 to 5 9/13? Converting Fractions to Decimals [01/08/1997] How do you convert fractions to decimals? How do you turn decimals into ratios? Converting Fractions to/from Mixed Numbers [07/21/1997] How do you change a fraction to a mixed number in simplest form (for example 9/5)? or a mixed number to an improper fraction (like 3 1/16)? Converting Mixed Numbers to/from Improper Fractions [10/28/2001] How can I change mixed numbers like 1 3/4 into improper fractions, and improper fractions like 7/5 into mixed numbers? Cross-Multiplication [08/04/2002] Can you explain cross-multiplication? Demonstrating Equivalent Fractions [10/25/2000] How can my 5th grade daughter demonstrate equivalent fractions to her gifted class? Diagram Showing Division of Fractions [01/13/2002] I understand how to divide fractions, but would like to be able to draw this problem in a diagram: (2/3)/(3/4) = 8/9. Divide by a Fraction [03/19/1997] How do you divide a whole number by a fraction? Dividing a Fraction by a Fraction [08/11/1997] Can you help students visualize a problem such as: 1/3 / 1/2 = 2/3 ? Dividing a Whole Number by a Fraction [04/02/1997] How do you divide a whole number by a fraction? Dividing by a Fraction [06/29/1999] Why is it that when you divide by a fraction, your answer is larger? Dividing Decimals by Whole Numbers [10/19/2002] Dividing decimals has been hard for me to learn. Dividing Fractions [09/08/99] How do you divide fractions? Dividing Fractions to find Decimals [03/12/2001] Why does dividing the numerator by the denominator give you the decimal form of a fraction? Division [11/25/1997] How do you divide 1,000,000,000,000 by 999,999,999,999,999,999,999? Draw Three Parts and Shade Two [04/12/2001] When I draw three parts and shade two of them, what is the name of the fraction I've shaded? Explaining Division of Fractions [08/11/1999] Can you give a practical explanation of why the 'invert-and-multiply' rule for division of fractions works? Finding Decimals on a Number Line [01/16/2002] How can I find a number like 0.725 on a number line? A Fraction and a Prime Number Question [2/9/1995] An elementary student asks questions about fractions and prime numbers. Fraction Bar Name [12/14/1996] What is the name of the little line that separates the divisor from the dividend in a standard division question? Fraction Basics [7/21/1996] I don't understand how to do fractions. Fraction Diagrams [03/13/2002] In an adult condominium complex, 2/3 of the men are married to 3/5 of the women. What fraction of the residents are married? Fraction Multiplication and Division [02/10/2001] How do you do calculations like 2 1/10 * 7 5/8 or 27/30 over 75/100? Fractions, Improper Fractions, Mixed Numbers [02/01/1997] How do you turn an improper fraction into a mixed number? Fractions in Simplest Form [01/15/1998] How would you write 99/6 in simplest form? Fractions in the SI System? [11/07/2001] When using metric can 4 cm and 5 mm be written as 4 1/2 mm? Page:  1  2  3  4  5  6  7  8 [next>]

Search the Dr. Math Library:

 Search: entire archive just Elementary Fractions Find items containing (put spaces between keywords):   Click only once for faster results: [ Choose "whole words" when searching for a word like age.] all keywords, in any order at least one, that exact phrase parts of words whole words

[Privacy Policy] [Terms of Use]

© 1994- The Math Forum at NCTM. All rights reserved.
http://mathforum.org/