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 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. Multiplying Fractions [1/28/1996] I need help with problems such as this one: 3 1/4 x 3/4 = ? Multiplying Fractions [01/20/1997] If multiplication is defined as repeated addition, why is the product of two fractions smaller than either of the fractions? Multiplying Fractions [07/09/1999] I need to know how to multiply fractions like 3/5 x 5/8. Multiplying Fractions and a Whole Number [5/16/1995] How are problems like 3/5 x 4 done? Multiplying Fractions by Cancellation [10/09/1998] I'm trying to multiply fractions by cancelling out numbers... Multiplying Fractions ... Made of Decimals? [06/16/2015] A student encounters multiplication homework with decimals in the numerator and denominator of a fraction. Showing equivalent expressions each step of the way, Doctor Ian lifts the veil separating decimals, fractions, and division. Multiplying Mixed Numbers [04/06/2004] Why do you need to convert mixed numbers to improper fractions before multiplying them together? What is the mathematical reason behind this operation? Multiplying Numbers with Decimals [12/7/1995] What is 9.4 x 9.6 ? Multiplying Unlike Fractions [4/1/1996] What is the fastest way to multiply unlike fractions? Multiplying Whole Numbers by Fractions [05/31/1999] How do you multiply whole numbers by fractions? Name an Equivalent Decimal [08/31/2001] Examples of problems: 0.3, 3.10, 2.7, 5.00, 87.05, etc. Name of Bar That Denotes a Repeating Decimal [08/30/2004] What is the name of the bar that goes over a digit or group of digits that signifies that the digit or group repeats? Number of Places in Products of Decimals [09/19/2002] When you multiply decimals, why is there always the same number of decimal places in the answer as in the problem? Numbers in a Fraction [05/20/2001] Is a fraction one number or is it two numbers? Numerator, Denominator: Etymologies [03/25/2002] Why are the parts of a fraction called the numerator and the denominator? Numerators and Denominators in Addition [3/3/1996] Why do we add numerators but not denominators when we add fractions with like denominators? The Oneths Place [09/29/1998] In decimal numbers, why is there no oneths place? Ordering Decimals [10/17/1998] What is the best way to learn how to compare decimals? For example, is .467 less than, greater than, or equal to .465? Ordering Fractions [01/17/2003] How do I order the fractions 2/3, 3/5, and 2/7? Ordering Fractions by Changing Them to Decimals [12/11/2008] How can I put the fractions 3/10, 1/2, 7/8, 4/5, 1/6, 3/4, 9/10, 1/3, 3/5, 3/8, 1/4, and 1/10 in order from least to greatest? Ordering Improper Fractions [10/12/2002] How can I explain ordering improper fractions? Order of Decimals [05/18/1999] How do you order decimals, for instance, 5.9, 6.10, 2.52 ? Order of Operations [8/21/1996] How do I solve (8.2 - 3.6)(3 * 3.6 + 6)? Order of Operations and Fractions [02/22/2002] Given a+3 and b+5, is 105 / ab 7 or 175? Origin of the Term "Improper" Fraction [07/28/2006] Why are fractions with larger numerators than denominators called "improper"? Where did the terms "proper" and "improper" originate in relation to fractions? Percentage of Votes Cast [06/03/2003] If you have two percentages, say 25% and 50%, can you do a percent change between the two? Percent or Percentage? [05/14/2002] Would you please explain the exact difference between the words percent and percentage? Picturing Dividing Fractions [04/02/2001] My fifth graders can divide fractions without a problem, but we can't draw the division problems out to prove our answers... Placement of the Negative Sign in a Negative Mixed Number [10/25/2004] When you have a negative improper fraction, can the negative sign be put anywhere in the fraction? For instance, is -1 3/5 the same as 1 -3/5 and 1 3/-5? Place Value and Similar Numbers [08/15/2003] How do you read these numbers? Is there a difference? 10.200, 10.00002 Price before Discount [6/3/1996] A calculator's price is discounted 20 percent. After adding 7 percent tax... Product of Terms of a Sequence [04/18/2003] Find the product of the first 99 terms of the sequence 1/2, 2/3, 3/4, 4/5, ... Proof for Dividing Fractions [01/18/2002] Could you please send me a proof for dividing fractions? Putting Fractions in Order [01/24/2001] I am trying to order fractions from least to greatest, but am having no luck. Putting Rational Numbers in Order [09/22/2002] I have to order 4/15, 6/17, and 3/16 from least to greatest, and I can't use a calculator. Rationalizing the Denominator [05/03/1999] Why can't you have a square root in the denominator of a fraction? Reaction Time: Softball, Baseball [04/26/2003] A baseball pitcher throws at 90mph from 60 feet, and a softball pitcher throws at 60mph from 40 ft. How can I measure reaction time for the batters? Reciprocal of a Mixed Number [06/01/1999] What is the reciprocal of 6 and 1/3? Recurring Decimal Notation [05/12/2003] What is 0.321 with dots over the 3 and the 1? Reducing Fractions [03/17/1997] How do you know when a fraction is in its simplest form? Page: []

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