Arithmetic Grade Five

Lesson One Hundred Twenty-eight: Equivalent Fractions


Equivalent Fractions
Here's a list of fractions which are equivalent to one-half.


  1	2	3	4	5	6	7	8
 ---   ---     ---     ---     ----    ----    ----    ----
  2     4       6       8       10      12      14      16

We could do the same thing for two-thirds:

  2	4	6	8	10	12	14	16
 ---   ---     ---     ----    ----    ----    ----    ----
  3     6       9       12      15      18      21      24

You should notice a pattern between the numerators and the denominators.

On the next page you will practice forming equivalent fractions like we learned to do in the last lesson.


          3     ?
         --- = ----
          4     12

To solve this problem do the following:
  1. divide the second denominator by the first (12/4 = 3)
  2. multiply the first numerator by your answer from step one ( 3 x 3 = 9)
And that's the answer:

          3     9
         --- = ----
          4     12

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