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Fractions XIII Multiplication of Whole Numbers by Monica Yuskaitis.

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Presentation on theme: "Fractions XIII Multiplication of Whole Numbers by Monica Yuskaitis."— Presentation transcript:

1 Fractions XIII Multiplication of Whole Numbers by Monica Yuskaitis

2 Times You Would Multiply a Fraction Times a Whole Number You walk a 4 mile route halfway. ½ of 4 or ½ x 4 You walk a ¾ mile route twice. 2 x ¾

3 Times You Would Multiply a Fraction Times a Whole Number A $12 ticket to the magic show is on sale for 2/3 of the original price. 2/3 of $12 or 2/3 x 12

4 How to Find the Fraction of a Whole Number The first thing to remember is of means multiply in mathematics. of = x

5 How to Find the Fraction of a Whole Number Step 1 - When you see a fraction problem you know when you read of in the problem you multiply. of 46 x 1 2

6 How to Find the Fraction of a Whole Number Step 2 – Change your whole number to a fraction by adding a one underneath. x 46 1 1 2

7 How to Find the Fraction of a Whole Number Step 3 – Multiply your numerators straight across. x 46 1 1 2 = 46

8 How to Find the Fraction of a Whole Number Step 4 – Then multiply your denominators straight across. x 46 1 1 2 = 46 2

9 How to Find the Fraction of a Whole Number Step 5 – Simplify your answer. In this case we change an improper fraction to a mixed number or a whole number. x 46 1 1 2 = 46 2 2)2) 23

10 Multiply and Simplify 36 1 1 3 = 3 3)3) 12 of x

11 Multiply and Simplify 18 1 1 6 = 6 6)6) 3 of x

12 Multiply and Simplify 9 1 3 8 = 27 8 8)8) 3 of x 24 3 3 8

13 Multiply and Simplify 6 1 7 8 = 42 8 8)8) 5 of x 40 2 2 8 5 2 8 ÷ 2 2 = 5 1 4 ÷

14 Multiply and Simplify 12 1 1 8 = 8 8)8) 1 of x 8 4 4 8 1 4 8 ÷ 4 4 = 1 1 2 ÷ Youre really getting this!

15 Credits Clipart from Microsoft Clip Gallery located on the Internet at http://cgl.microsoft.com/http://cgl.microsoft.com/ clipgallerylive/default.asp


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