teste de layout

1. Fractions

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

9. Call us for more
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