Fractions represent parts of a whole. They are made up of a numerator above a denominator, where the numerator indicates the number of equal parts being considered and the denominator indicates the total number of equal parts the whole was divided into. There are three main types of fractions: proper fractions where the numerator is smaller than the denominator, improper fractions where the numerator is larger, and mixed numbers which are a whole number and a fraction combined. Fractions are used to represent parts of measuring tools like rulers and cups as well as in other mathematical concepts.

1. Fractions
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2. Fractions
 A fraction is a number that names an equal part of a
whole.
 A number in the form
Numerator
Denominator
1
3
1
3

3. What are FRACTIONS?
 Fractions are a part of the whole
 We use fractions all the time.
 Have you ever used a steel tape or a ruler?
 Inches are divided into parts
 Have you ever used a measuring cup?
 Cups are divided into parts

4. Let’s draw a rectangle, and divide it in
two equal parts...
The red part of the rectangle represents a fraction…
1/2 (one half)

5. Parts of fractions
 Numerator
 The number above the bar in a fraction. It tells how many of
the equal parts of the whole or group are being considered.
 Denominator
 The number below the bar in a fraction. It tells the total
number of equal parts.
Numerator
1
3
One third
Denominator

6. 1 part shaded
3 parts shaded
2 equal parts
1
2
5 equal parts
Shaded
parts
Equal parts
in a whole
3
5

7. Types of fractions
 Proper fractions
– the top number (numerator) is
SMALLER than the bottom number
(denominator).
 Improper fractions
– the top number is LARGER than the
bottom number.
 Mixed numbers
– a whole number and a fraction.
1
2
3
2
3
2
2

8. Fractions
 The denominator can never be equal to 0.
12
= Does not exist!
0
• A fraction with a numerator of 0 equals 0.
0
3
0
0
0
312

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