Math Student Help

Important rules to remember when adding, subtracting, multiplying, or dividing fractions!

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Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/leastcommondenominator.php Students learn to add unlike fractions by first finding a common denominator. For example, to add 1/2 + 1/3, first find the common denominator of 2 and 3, or the Least Common Multiple of 2 and 3, which is 6. Then multiply the numerator and denominator of 1/2 by 3, to get the equivalent fraction 3/6, and multiply the numerator and denominator of 1/3 by 2, to get the equivalent fraction 2/6. Next, add the like fractions, 3/6 + 2/6, to get 5/6. So 1/2 + 1/3 = 5/6. Students also learn to subtract unlike fractions by following the same process that is used when adding unlike fractions.

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Anyone can DRAW fraction multiplication

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Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/equivalentfractions.php Students learn that two fractions are equivalent if the fractions are the same when they are written in lowest terms. For example, 4/7 and 8/14 are equivalent fractions, because they are both equal to 4/7 when written in lowest terms. Students also learn to find fractions that are equivalent to a given fraction by multiplying the numerator and denominator of the given fraction by the same number. For example, to find fractions that are equivalent to 1/8, multiply the numerator and denominator by 2, to get 2/16, multiply the numerator and denominator by 3, to get 3/24, and so on.

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In this video, I’ll show you how to add and subtract fractions with different denominators. This process is very different when the denominators are different, but with practice can be just as easy as when the denominators are the same.

If you are a teacher or student
looking for online resources to help you understand other things you’re having trouble with, go to my website:

http://sites.google.com/site/klinzmannkonnection/

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http://www.mathproblemgenerator.com - How to Subtract Fractions with Uncommon Demoninators. For more practice and to create math worksheets, visit Davitily Math Problem Generator at
www.mathproblemgenerator.com

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A mixed number is a number that contains both whole numbers and fractions. Change mixed numbers into decimals by creating a simple fraction and turning the fraction into a percentage with tips from a math teacher in this free video math lesson.

Expert: Steve Jones
Bio: Steve Jones is an experienced high school mathematics and science teacher.
Filmmaker: Paul Volniansky

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In math, factoring by grouping means that the greatest common factor needs to be found. Factor four different terms through grouping with help from a math author and teacher in this free video on math lessons.

Expert: Brian Leaf
Contact: www.brianleaf.com
Bio: Brian Leaf, MA, is the author of McGraw-Hill’s “Top 50 Skills for SAT/ACT Success” series.
Filmmaker: David Pakman

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This video contains numerous examples of how to convert percents into fractions and decimals.

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A simple mistake during a mathematical calculation leads to devastating consequences.

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