Converting Measurements Using Ratios Standard System

How many cm are in 7 inches? ( 1 inch = 2.54 cm)

• 17.78 cm

• 21.22 cm

• 22.44 cm

The taxi service charges by the kilometer. If it is 34 miles from the airport to your friend’s house, what is the distance in kilometers?
(1 mile = 1.6 km)

• 53.2

• 12.2

• 54.4

My car needs 15 gallons of gas, but the German gas station only sells their gas in liters. How many liters are in 15 gallons? (1 liter = 0.7 gallons)

• 14.3 liters

• 21.43 liters

• 80 gallons

• 80 liters

How many pints make a quart?

• 2

• 4

• 6

• 8

Approximately how many meters are equivalent to 15 ft?

• 8 m

• 7 m

• 5 m 

• 4 m

If 1 pound equals 0.453592 kilograms, how many kilograms are in 5 pounds?

• 2.26796 kilograms

• 22.6796 kilograms

• 0.453592 kilograms

• 4.53592 kilograms

648 g = ____ mg

• 6,480

• 64,800

• 648,000

• 64.8

Approximately how many kilometers are equivalent to 12 miles?

• 14 km

• 19 km

• 7 km

• 45 km

A mixture requires 4 parts water to 1 part concentrate. If you have 20 parts of concentrate, how many parts of water do you need?

• 40 parts

• 80 parts

• 100 parts

• 120 parts

Approximately how many inches are equivalent to 15 cm?

• 6 in

• 3 in

• 9 in 

• 38 in