Commutative Property of Multiplication | MathHelp.com @yourteachermathhelp

Uploaded January 2016 | Updated September 2026, 2 weeks ago

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This lesson covers commutative property of multiplication, which states that a x b = b x a. For example, 10 x 4 = 4 x 10.

Commutative Property of Multiplication | MathHelp.com

$Lowest Common Denominator | Math Placement Test | ALEKS | TSI | ACCUPLACER | PERT | MathHelp.com Prep for your math placement test at MathHelp.com: https://www.mathhelp.com This lesson covers subtracting fractions using the lowest common denominator. Students learn to subtract unlike fractions by first finding a common denominator. For example, to subtract 7/12 - 1/3, first find the common denominator of 12 and 3, or the Least Common Multiple of 12 and 3, which is 12. Then multiply the numerator and denominator of 1/3 by 4, to get the equivalent fraction 4/12. Next, subtract the like fractions, 7/12 + 4/12, to get 3/12. Finally, reduce 3/12 to 1/4.$

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$Multiplying Mixed Numbers | MathHelp.com Need a custom math course? Visit https://www.MathHelp.com. This lesson covers multiplying mixed numbers. Students learn to multiply mixed numbers by first rewriting the mixed numbers as improper fractions, then multiplying the improper fractions together, then rewriting the resulting improper fraction as a mixed number, if necessary. For example, to multiply 1 8/15 x 1 1/4, first rewrite the mixed numbers as improper fractions, to get 23/15 x 5/4. Next, cross-cancel the 15 and 5 to 3 and 1, and we have 23/3 x 1/4. Next, multiply across the numerators and denominators to get 23/12. Finally, rewrite 23/12 as the mixed number 1 11/12.$

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Commutative Property of Multiplication | MathHelp.com