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Adding Fractions w/ unlike denominators
Subtracting fractions w/ unlike denominators
Adding and subtracting mixed numbers w/ unlike denominators
Vocabulary
100

describe how to add fractions when you have the same denominator

add the top numbers, denominator stays the same

100


  2         1

____ + ____ =

  3          4


11

___

12

100

  1         1

____ - ___ =

  3        4

                                             

  1

___

 12

100

      3          2

2  ____ +  ___ =

      4          3

  41

____

  12

100

What is a denominator?

The number below the line in a fraction.

200

describe two ways to add fractions that have different numbers

Create equivalent fractions with like denominators using multiplication OR using boxes (drawing pictures).

200

  3         2

____ + ___ =

  4         3

17

___

12

200

  2          1

____ - ___ =

  3         5

                                              

Joe

200

      1         5

2  ____ +  ___ =

      4         6

   74

______

   24

200

What is a numerator?

The number above the line in a fraction.

300

describe how to create an equivalent fraction

multiply or divide the numerator (the top) and the denominator (the bottom) by the same number

300

  4         3

____ + ___ =

  5         4

  31

____

  20

300

  1         1

____ - ___ =

  2         5

                                             

if you read this your dumb

300

       1          4

3  ____ +   ___ =

      4           5

  81

____

  20

300

What does equivalent mean?

Equal in value or the same in value.

400

describe how to convert an improper fraction to a mixed number

take away the whole from the numerator, and that turns into the whole number. whatever is left over is the numerator, the denominator stays the same.

400

  6         5

____ + ___ =

  7         6

  71

_____

  42

400

  4         2

____ - ___ =

  5         3

  2

___

15

400

      1          4

3  ____ -   ___ =

      5          6

  76

____

  30

400

What does simplify mean?

To reduce a fraction to it's simplest form.

500

Mr. Neville Iceguy mixed up 12 and 3/5 gallons of chili for a party. If 7and3/4 gallons of chili was mild, and the rest was extra spicy, how much extra spicy chili did Mr. Iceguy make?

4 and 7/20

500

  5         7

____ + ___ =

 7          8

   89

_____

   56

500

  5         1

____ - ___ =

  7         3

  8

___

 21

500

      2            2

4  ____ -  3  ___ =

      6          3

  12           2

_____ = _____

  18           3 

500

What is a common denominator?

when the denominators are the same

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