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104_G6U13_WB˙—» ¿º 2011.4.5 10:13 AM ˘ ` 12
104-B7-1
1. Use the proportion to find a.
a. 5 a b. 9 12
6 24 12 a
c. a 40 d. 8 1.6
0.6 12 a 2.6
2. The distance between the bookstore and the post office is 6 cm on the map. What
is the actual distance between the post office and bookstore?
Post office
Bookstore
Scale
1 cm : 100 m
0 100 200 Meters
3. Find the unknown length. b.
Scale: 0.4 cm : 3 m
a. Length in picture: 20 cm
Scale: 3 in. : 8 ft Actual length: b m
Length in picture: a in.
Actual length: 32 ft
104-B7-1
1. Use the proportion to find a.
a. 5 a b. 9 12
6 24 12 a
c. a 40 d. 8 1.6
0.6 12 a 2.6
2. The distance between the bookstore and the post office is 6 cm on the map. What
is the actual distance between the post office and bookstore?
Post office
Bookstore
Scale
1 cm : 100 m
0 100 200 Meters
3. Find the unknown length. b.
Scale: 0.4 cm : 3 m
a. Length in picture: 20 cm
Scale: 3 in. : 8 ft Actual length: b m
Length in picture: a in.
Actual length: 32 ft
