Fractions

Vocabulary

100

A fraction that includes a whole number is called a ___

(ex. 1 1/2)

mixed number

200

The top of a fraction is the ____

The bottom is the ____

Numerator

Denominator

300

A fraction with a numerator GREATER than the denominator is an ____ fraction

improper

400

To compare fractions, they must be ____ to the same denominator

simplified or reduced

Saying Fractions

100

3/2

three halves or three over two

200

7/3

Seven thirds or seven over three

300

1/4

one fourth or 1 over four

400

4/5

four fifths or four over five

Addition/subtraction

100

2/6 + 1/3

2/6 + 2/6 = 4/6 = 2/3

200

3/4 - 2/3

9/12 - 6/12 = 3/12 =1/4

300

7/12 + 4/6

7/12 + 8/12 = 15/12 = 1 3/12 = 1 1/4

400

7/8 - 4/12

LCD = 24

21/24 - 8/24 = 13/24

Check by multiplying each fraction by the other denominator

84/96 - 32/96 =52/96 = 13/24

Multiplication/division

100

1/2 x 3/4

3/8

200

8/14 x 10/22

4/7 x 5/11 = 20/77

300

7/8 : 3/5

7/8 x 5/3 = 35/24 = 1 11/24

400

4/60 : 6/20

4/60 x 20/6 = 2/30 x 10/3 = 20/90 = 2/9