Multiplying%20 - PowerPoint PPT Presentation

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Multiplying%20

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Multiplying & Dividing Fractions Multiplying Fractions Multiplying fractions is easy. Top x top = top Bottom x bottom = bottom Multiplying by a whole number Make your ... – PowerPoint PPT presentation

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Title: Multiplying%20


1
Multiplying Dividing Fractions
2
Multiplying Fractions
  • Multiplying fractions is easy.
  • Top x top top
  • Bottom x bottom bottom

Shoot straight!
3
Multiplying by a whole number
  • Make your whole number look like a fraction by
    putting it over 1.
  • Top x top top
  • Bottom x bottom bottom

Shoot straight!
4
Multiplying Mixed Numbers
  • Make your mixed numbers into improper fractions
    first.

5
Canceling
  • Canceling is a special tool reserved just for
    fractions .
  • Any factor anywhere on the top can be canceled
    with a matching factor on the bottom.

6
The magic of OF
  • You can do many fraction problems in your head if
    you can remember that multiply can be replaced
    by the word of .

7
Dividing Fractions
  • Dividing fractions is just doin the flip!
  • Flip the fraction after the
  • Multiply

8
Remember
Cancel if you can. Multiply straight across. Flip
when you divide. Change whole numbers or mixed
number to improper fractions.
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