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Notice anything interesting?
Dividing Fractions Notice anything interesting?
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Dividing by a fraction is the same as
multiplying by the second number “flipped over” …for example, are called reciprocals
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1 ! = What happens when you multiply a number by its reciprocal? ·
Write “reciprocal” in your notes!! What happens when you multiply a number by its reciprocal? 1 ! = ·
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Dividing is the same as MULTIPLYING BY THE RECIPROCAL
Write this in your notes!! Dividing is the same as MULTIPLYING BY THE RECIPROCAL examples:
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How about mixed numbers?
…hint: remember what we did with mixed numbers and multiplication!! To divide mixed numbers just change them to improper fractions, then use the rule
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Practice by doing these:
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Some of you might not be convinced why this works!
Let’s look at: which we can write as… = multiply the top and bottom by…
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