Proportions

What is a proportion?

• A pair of equivalent fractions.

• A pair of equivalent ratios.

• A single ratio.

• Any two fractions.

What two conditions must be met for two ratios to form a proportion?

• They must have the same top numbers and bottom numbers.

• They must have the same value and different units.

• They must have the same value and the same units.

• They must have different values but the same units.

What is the primary use of proportions in mathematics?

• To simplify complex fractions.

• To convert units between different measurement systems.

• To find an unknown value from known values.

• To compare two different quantities.

What is the value of 'n' in the proportion 1/2 = 23/n?

• 23

• 46

• 11.5

• 2

If a map scale indicates that 5 cm represents 9 miles, what real-life distance does 20 cm on the map represent?

• 18 miles

• 45 miles

• 36 miles

• 100 miles