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Fractions

The big picture

A fraction is a number with its own exact place.

Fractions — the whole chapter on one screen
IdeaRememberExample
Equal partsA fraction name needs equal parts.3 uneven pieces are not thirds.
The two numbersBottom: how many equal parts. Top: how many you took.In 3/8, one part is 1/8.
On the lineCut each step into bottom-number parts. Walk top-number steps.7/4 is 1 and 3/4.
Many namesMultiply or divide top and bottom by the same number.1/2 = 2/4 = 4/8.
Which is moreRename to one bottom number. Compare the tops.3/4 = 15/20 is more than 3/5 = 12/20.
AddingTops add or subtract. The piece size stays.1/4 + 1/4 = 2/4.

Open Chapter 7, Fractions, in your book. You have already cut, named and placed every piece in it.

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This track

  1. 0 Start here
  2. 1 Fair parts, or no name at all
  3. 2 What the two numbers mean
  4. 3 A fraction has its own spot
  5. 4 One amount, many names
  6. 5 Which piece is more?
  7. 6 Adding pieces of one size
  8. 7 The big picture
  9. 8 Track quiz

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