Map Scales

Large-scale & Small-scale Maps

100

A map of the world is an example of a large-scale or small-scale map?

Small-scale map

200

Would you use a large-scale or small-scale map for hiking in Coney Island?

Large-scale map

300

True or False? A small-scale map shows less detail than a large-scale map.

True

400

A map with a scale of 1 : 15 000 is an example of a large-scale or small-scale map?

A large-scale map

500

True or False? A small-scale map represents a small area, but a large-scale map represents large area.

False

Fill in the blank

100

The Singapore map is a scale drawing of the __________ size of Singapore.

actual

200

A map is a representation of an area with its size __________.

reduced

300

The scale of a map is usually expressed as a ratio 1:n, where n is a __________.

(positive) whole number

400

A ratio 1 : 50 without units means that __________.

the quantities are in the same unit.

500

A map scale of 1 : 20 000 means that __________.

1 cm on the map represents 20 000 cm on the actual ground

Express the map scale in the form 1 : n

100

1 cm represents 700 cm

1 : 700

200

1 cm represents 3.5 m

1 : 350

300

1 cm represents 12 km

1 : 1 200 000

400

2 cm represents 6 000 m

1 : 300 000

500

2 cm represents 2.4 km

1 : 120 000

Using map scales to find actual distance and distance on a map

100

The scale of a map is 1 : 800. The distance on the map between the library and playground is 25 cm. Find the actual distance between the library and playground in metres.

200 m

200

The scale of a map is 1 : 400 000. The length of an expressway on the map is 10.7 cm. Find the actual length of the expressway in kilometres.

42.8 km

300

The scale of a map is 1 : 8 000. The actual length of a walking path is 600 m. Find the length of the walking path in centimetres on the map.

7.5 cm

400

The scale of a Singapore map is 1 : 50 000. The actual length of the Singapore River is 3.2 km. Find the length of the Singapore River in centimetres on the map.

6.4 cm

500

A map is drawn to a scale of 2 cm to 5 km. The actual length of a jogging path is 8 km. How long is the jogging path in centimetres on the map?

3.2 cm

Conversion of Unit

100

What is 1 m in cm?

100 cm

200

What is 5 cm in m?

0.05 m

300

What is 1 km in cm?

100 000 cm

400

What is 15 000 cm in km?

0.15 km

500

What is 1 km in mm?

1 000 000 mm