Proportions and Equivalent Ratios

What is a proportion?

• A pair of equivalent ratios

• A fraction used in a certain way

• A ratio with different units

• A number multiplied by an unknown value

What is the key requirement for two ratios to be equivalent?

• They must have the same value

• They must have the same units

• They must have the same numerator

• They must have the same denominator

How can we find an unknown value in a proportion?

• By cross-multiplying

• By dividing both sides of the equation

• By adding the known values

• By subtracting the known values

What is the missing number in the proportion: 3 books per 5 days = 9 books per ? days

• 10

• 12

• 15

• 18

In the example with the map of Hawaii, what is the unknown distance from Mona Loa to Hilo?

• 20 miles

• 25 miles

• 30 miles

• 36 miles

What is the value of 'n' in the proportion: 4 pizzas per 8 days = ? pizzas per 16 days

• 2

• 4

• 6

• 8

What happens to a number when it is multiplied by 1?

• It becomes zero

• It becomes negative

• It stays the same

• It becomes double

What is the equivalent ratio for 2 books per 4 days?

• 1 book per 2 days

• 3 books per 6 days

• 4 books per 8 days

• 5 books per 10 days

What is the value of 'n' in the proportion: 6 miles per 12 hours = 3 miles per ? hours

• 2

• 3

• 4

• 6

What is the missing number in the proportion: 7 pencils per 14 students = ? pencils per 28 students

• 7

• 14

• 21

• 28