Map Scales and Ratios

Choose the correct option

• A=i, B=ii, C=iii, D=iv

• A=ii, B=i, C=iv, D=iii

• A=iv, B=i, C=ii, D=iii

• A=iv, B=i, C=iii, D=ii

Work out the length on the map that represents the real life distance of 10km, for the scale 1:50,000

• 2cm

• 200cm

• 2000cm

• 20cm

Write the scale as a map ratio:

• 1:10

• 1:100

• 1:1000

• 1:0.1

Write the scale as a map ratio:

• 1:500,000

• 1:5,000

• 1:50,000

• 1:500

If 10 inches on a map represents an actual distance of 100 feet, then what actual distance does 25 inches on the map represent?

• 25 feet

• 100 feet

• 150 feet

• 250 feet

Answer explanation

The correct answer is 250 feet. First calculate the number of feet that 1 inch represents:

100 ft ÷ 10 in = 10 ft/in

Then multiply this by the total number of inches:

25 in × 10 ft/in = 250 ft

Mathematical Equivalence

OFF

If a map scale is 1 inch represents 10 miles, how many inches on the map represent 50 miles?

• 2 inches

• 5 inches

• 10 inches

• 25 inches

A map scale shows that 1 inch represents 10 miles. If two cities are 3.5 inches apart on the map, what is the actual distance between them?

• 35 miles

• 100 miles

• 3.5 miles

• 0.35 miles

Ana drew a map of the Panama Canel. In the scale Ana used for the map, 4 centimeters represents 20 kilometers. The actual length of the Panama Canal is 82 kilometers. What is the length in centimeters of the Panama Canal on Ana’s map?

• 410

• 15.5 cm

• 16.4 cm

• 162