Math Help - PreAlgebra - Dividing Fractions
Wednesday, July 22nd, 2009
Students learn to divide fractions by first changing the division sign to multiplication and flipping the second fraction. For example, to simplify 7/12 divided by 7/9, first change the division sign to multiplication and flip the second fraction, to get 7/12 x 9/7. Next, multiply the fractions by first cross-canceling, then multiplying across the numerators and across the denominators.
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Duration : 0:1:15
Fractions are converted to decimals by dividing the numerator by the denominator. Convert fractions into decimals with tips from a math tutor in this free video on fractions.
ADDING AND SUBTRACING IS EASY BABY! -mr nystrom
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Access full lesson containing this video at: http://www.yourteacher.com/algebra2/complexfractions.php Students learn that when simplifying a complex fraction, the first step is to find a common denominator for all the fractions involved, then multiply the numerator and denominator of the complex fraction by the common denominator to get rid of all the fractions in the numerator and denominator. Next, factor the numerator and denominator, and cancel out the factors that are the same.
Access full lesson containing this video at: http://www.yourteacher.com/algebra1/multiplyingfractions.php Students learn to multiply two fractions by multiplying across the numerators, and multiplying across the denominators. Students learn to divide two fractions by taking the reciprocal of the second fraction, then multiplying the fractions.
http://www.FreedomUniversity.tv, john@e-liteworks.com, 719-963-5873. This is part of a series of math videos and worksheets to ensure your successs. This video about how to figure equivalent fractions.
Adding and Subtracding Fractions - Numerical Examples. In this video, I do a few examples of adding and subtracdting fractions.
This video contains a number of examples of converting fractions into decimals and percents.
Teach division of fractions step-by-step. First students learn sharing divisions with easy numbers (such as 1/2 : 4), thinking of sharing pie or pizza between so many people. Then students learn “measurement divisions” (such as 3 : 1/2), thinking “how many times does the divisor fit into the dividend”. Both of these kinds of division problems are meant to be solved mentally, concentrating on the concepts. In part 2, I show how to teach reciprocal numbers and the general shortcut for fraction division.