Learn Fractions XIV

Information about Learn Fractions XIV

Published on June 15, 2007

Author: Brainy007

Source: authorstream.com

Content

Fractions XIVMultiplication of Fractions:  Fractions XIV Multiplication of Fractions by Monica Yuskaitis Times You Would Multiply a Fraction Times a Fraction:  Times You Would Multiply a Fraction Times a Fraction Your family eats 1/8 of 1/2 of a left over wedding cake. 1/8 of 1/2 or 1/8 x 1/2 Times You Would Multiply a Fraction Times a Fraction:  Times You Would Multiply a Fraction Times a Fraction Jose had already read 1/2 of his novel. Today he read 1/12 of the 1/2 left. How much of the book has he read? 1/12 of 1/2 or 1/12 x 1/2 Multiplying FractionsConceptual Understanding:  Multiplying Fractions Conceptual Understanding When you multiply two fractions that are between 0 and 1 the product is smaller than both fractions. ½ x ¾ = 3/8 Look at the diagram on the next slide to understand why. Multiplying FractionsConceptual Understanding:  Multiplying Fractions Conceptual Understanding ½ x ¾ = 3/8 ¼ ¼ ¼ ¼ 1/8 1/8 1/8 How to Find a Fraction of a Fraction:  How to Find a Fraction of a Fraction The first thing to remember is 'of' means multiply in mathematics. of = x How to Find a Fraction of a Fraction:  How to Find a Fraction of a Fraction Step 1 - When you see a fraction problem you know when you read 'of' in the problem you multiply. of x 1 2 4 9 How to Find a Fraction of a Fraction:  How to Find a Fraction of a Fraction Step 2 – Multiply your numerators straight across. x 4 9 1 2 = 4 How to Find a Fraction of a Fraction:  How to Find a Fraction of a Fraction Step 3 – Then multiply your denominators straight across. x 4 9 1 2 = 4 18 How to Find the Fraction of a Fraction:  How to Find the Fraction of a Fraction Step 4 – Simplify your answer. In this case we reduce. x 4 9 1 2 = 4 18 ÷ ÷ 2 2 = 2 9 Multiply and Simplify:  Multiply and Simplify 9 5 1 6 = 9 30 10 3 of x ÷ ÷ 3 3 = Multiply and Simplify:  Multiply and Simplify 3 4 8 9 = 24 36 3 2 of x ÷ ÷ 12 12 = Multiply and Simplify:  Multiply and Simplify 4 3 7 2 = 28 6 6) 28 4 of x 24 4 4 4 6 ÷ ÷ 2 2 = 2 3 4 Multiply and Simplify:  Multiply and Simplify 9 2 3 4 = 27 8 8) 27 3 of x 24 3 3 8 Multiply and Simplify:  Multiply and Simplify 8 2 7 3 = 56 6 6) 56 9 of x 54 2 2 6 9 2 6 ÷ 2 2 = 9 1 3 ÷ Multiply and Simplify:  Multiply and Simplify 3 4 4 2 = 12 8 8) 12 1 of x 8 4 4 8 1 4 8 ÷ 4 4 = 1 1 2 ÷ Super job! Credits:  Credits Clipart from 'Microsoft Clip Gallery' located on the Internet at http://cgl.microsoft.com/ clipgallerylive/default.asp

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