Fraction Addition and Subtraction

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Whipping up some tasty Fractions!

• Fraction Addition and Subtraction

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How can I add FRACTIONS?
Hello there young mathematicians! It is I, Chef
Nemeril Pagasi. I am here today to help you learn
to add and subtract fractions with unlike
denominators!
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How do we add fractions?
Lets begin with a review!
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• Our standard for this week is
• 5.NF.1
• Add and subtract fractions with unlike
  denominators (including mixed numbers) by
  replacing given fractions with equivalent
  fractions in such a way as to produce an
  equivalent sum or difference of fractions with
  like denominators. For example, 2/3 5/4 8/12
  15/12 23/12. (In general, a/b c/d (ad
  bc)/bd.)

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• Record these problems in your journal! Be sure
  to date the page, and show all the strategies you
  use to solve the problem!

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When adding 7/12 3/12, why do you add the
numerators but keep the denominator the same?
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The difference of two fractions is ¾. What
could the fractions be? Try to come up with more
than 1 set of answers!
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How do you know that 2 1/2 3 2/3 gt 6?
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Show the sum of ? ? using a number line?
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Use the digits 2, 3, 4, 5, 8, and 9 to form two
different mixed numbers with a difference between
1 and 2.
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Two fractions less than 1 result in a sum of 1 ?.
What could the fractions be?
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Can you explain to me WHY we can not add
fractions with unlike denominators without first
changing the denominators? Can you relate
fractions to real world problem?
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