Solution to

Frame 2-1.

In text, fractions are usually written in a horizontal form, such as "5/12,"

for ease of reading. When performing calculations, fractions are usually

7

written in a vertical form, such as 5.

12

12

The top (or first) number is called the numerator. The number on bottom

(or second number) is called the denominator.

In the fraction 5/12, "5" is the

and

"12" is the

.

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Solution to

Frame 2-2.

begin with multiplication and division of fractions rather than addition and

5

numerator

subtraction. The multiplication and division functions are relatively simple

operations, however, and multiplication must be understood before

12

denominator

addition and subtraction of some fractions can be performed.

To multiply fractions:

(1)

Multiply the numerators together;

(2)

Multiply the denominators together; and

(3)

Place the product of the numerators over the product of the

denominators.

For example:

2

4

2x4

8

X

=

=

3

5

3x5

15

You work

1

2

1x2

?

X

=

=

this one.

3

7

3x7

?

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Solution to

Frame 2-3.

Let's try four more.

2

a. 1

1

b. 3

1

___

X

=

X

=

21

2

2

4

2

c. 2

1

7

d. 3

2

___

X

X

=

X

=

7

8

10

2

6

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MD0900

2-2

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