Transcript Fractions - eisd.net

Fractions
A fraction is a number that
names an equal part of a
whole.
Vocabulary
• fraction
• numerator
• denominator
equivalent fraction
The numerator is the
number above the bar in a
fraction. It tells how many of
the equal parts of the whole
or group are being
considered.
3
4
three-fourths
The denominator is the
number below the bar in a
fraction. It tells the total
number of equal parts.
3 parts shaded
1 part shaded
2 equal parts
5 equal parts
1
Shaded parts
3
2
Equal parts
in a whole
5
5
8
= five-eighths
What is the numerator in the following fractions?
4
8
5 2
10 5
1
3
6
9
3
5
What is the denominator in these fractions?
Jose has three pencils. He
sharpened one pencil. What
fraction represents the sharpened
part of the group?
How many are in the whole or group? (denominator)
1
3
How many are in the part we are talking about? (numerator)
Equivalent Fractions
Whole
1
1/2
1/3
1/3
1/4
1/6
1/10
1/12
1/8
1/8
1/9
1/10
1/12
1/6
1/9
1/10
1/12
1/12
1/9
1/10
1/12
1/5
1/6
1/8
1/9
1/8
1/9
1/10
1/10
1/12
1/12
1/10
1/12
Fifths
1/5
1/6
1/8
Fourths
1/4
1/5
1/6
1/8
1/9
1/4
1/5
Thirds
1/3
1/4
1/5
Halves
1/2
1/6
1/8
1/9
1/9
1/10
1/12
1/12
1/10
1/12
Sixths
1/8
Eighths
1/9
Ninths
1/10
Tenths
1/12
Twelfths
Sample Questions
Which group shows less than 5/8 of the squares shaded?
Marcelo has a bag that contains 3 red, 1 blue, 6 green,
and 2 yellow marbles. What fractional part of the bag
of marbles is red?
RRR
B
GGGGGG
YY
1/12
2/12
3/12
6/12
Which point best represents 40 on the number line?
A
16
B
C
D
64
72
80
A
B
C
D
Review
Vocabulary