Introduction to Fractions

1
Introduction to Fractions

• Kristi Walker
  4th Grade

2
Vocabulary

• Fraction
• Numerator
• Denominator

3
Fraction

• A part of a whole number.
• Example 1/2

4
Denominator

• In a fraction, the denominator is the number
  below the line. It shows how many equal parts the
  whole is divided into.
• Example 2/3
• The denominator is 3.

5
Numerator

• In a fraction, the numerator is the number above
  the line. It shows how many parts of the
  denominator are taken.
• Example 2/3
• The numerator is 2.

6
Parts of a Fraction
3
the number of parts
4
the whole
7
Parts of a Fraction
3
numerator
4
denominator
8
Which number is circled?
3
4
denominator
9
Which number is circled?
3
numerator
4
10
What fraction of the balls are red?
3
4
11
What fraction of the balls are red?
1
4
12
What fraction of the balls are red?
1
6
13
What fraction of the balls are red?
4
6
14
What fraction of the rectangle is red?
4
6
15
What fraction of the rectangle is red?
2
6
16
What fraction of the pie is red?
4
4
17
What fraction of the pie is red?
3
4
18
What fraction of the musical instruments have
strings?
2
5
19
What fraction of the fish have stripes?
3
5
20
What fraction of the arrowshit the bullseye?
1
3
21
What fraction of the pins areknocked down?
3
10
22
How many halves are in a whole?
2
1/2 1/2
23
How many quarters are in a whole?
1/4 1/4 1/4 1/4
4
24
How many eighths are in a whole?
1/8 1/8 1/8 1/8
8
1/8 1/8 1/8 1/8
25
How many eighths are in a quarter?
1/8 1/8
2
1/4
26
How many eighths are in a half?
1/8 1/8 1/8 1/8
4
1/2
27
How many quarters are in a half?
1/4
2
1/2
1/4
28
How many thirds are in a whole?
1/3
1/3
3
1/3
29
How many sixths are in a whole?
1/6
1/6
6
1/6
1/6
1/6
1/6
30
How many sixths are in a third?

1/6
2
1/6
1/3
31
How many sixths are in a half?
1/6
3
1/2
1/6
1/6
32
How many fifths are in a whole?
1/5
1/5
5
1/5
1/5
1/5
33
How many tenths are in a whole?
1/10
1/10
1/10
1/10
10
1/10
1/10
1/10
1/10
1/10
1/10
34
How many tenths are in a fifth?
1/10
1/10
2
1/5
35
How many tenths are in a half?
1/10
1/10
5
1/10
1/2
1/10
1/10