FRACTION

A fraction is a part of a whole

Slice a pizza, and we get fractions:

¹/₂¹/₄³/₈

(One-Half)

(One-Quarter)

(Three-Eighths)

The top number says how many slices wehave. 
The bottom number says how many equal slices the whole pizza was cut into.

Have a try yourself:

Click the pizza →

Slices we have:

Total slices:

"One Eighth"

Slices:

▲▼

Equivalent Fractions

Some fractions may look different, but are really the same, for example: 

⁴/₈=²/₄=¹/₂(Four-Eighths) (Two-Quarters) (One-Half)==

It is usually best to show an answer using the simplest fraction ( ¹/₂ in this case ). That is called Simplifying, or Reducing the Fraction

Numerator / Denominator

We call the top number the Numerator, it is the number of parts we have.
We call the bottom number the Denominator, it is the number of parts the whole is divided into.

NumeratorDenominator

You just have to remember those names! (If you forget just think "Down"-ominator)

Adding Fractions

It is easy to add fractions with the same denominator (same bottom number):

¹/₄+¹/₄=²/₄=¹/₂(One-Quarter) (One-Quarter) (Two-Quarters) (One-Half)+==One-quarter plus one-quarter equals two-quarters, equals one-half