FRAME NUMBER 10

LEVEL A

RULE NO. 4. In finding the ratio of two numbers, both numbers must be expressed first in the

same unit of measure. Example: To find the ratio of 3 feet to 5 inches, the feet should first be

converted to inches.

3 x 12"

36"

1

or

7.2

or

1

:1

or

(7.2:1)

7

=

=

7

5

5"

5

1

5

1

Find the ratio to the following:

a. 2 feet to 2 yards

b. 2 inches to 3 yards

c. 5 miles to 3 feet

FRAME NUMBER 23

LEVEL B

There are two types of proportion, direct and inverse. Direct proportion is when an increase in

one quantity causes a proportional increase in another quantity, or when a decrease in one quantity

causes a proportional

in another quantity.

FRAME NUMBER 36

LEVEL C

You have a map of 1:45,000 scale which you want to use on a fishing trip. The route you want

to take measures 21.12 inches on the map. What is the ground distance, in miles?

21

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