Ratios, Rates, and Proportions

Which statement best describes what a ratio is.

• A number
• A comparison of two quantities using division.
• A comparison
• A comparison of many things.

What is the ratio of triangles to squares?

• 2:6
• 5:6
• 3:4
• 4:3

There are 4 birds and 6 snakes. What is the ratio of birds to snakes?

• 6/4

• 4/6

• 1/3

• 10/16

In a box of sweets ¹/₄ of the sweets are green. The rest are orange.

What is the ratio of orange sweets to green sweets?

• 3 : 1

• 1 : 3

• 1 : 4

• 4 : 1

The ratio of red counters to blue counters is 3 : 1

What fraction of the counters are blue?

• ¹/₄

• ³/₄

• ¹/₃

• ³/₁

The ratio of red counters to blue counters is 3 : 1

What fraction of the counters are red?

• ¹/₄

• ³/₄

• ¹/₃

• ³/₁

The ratio of green counters to blue counters is 4 : 5

What fraction of the counters are blue?

• ⁵/₄

• ⁴/₅

• ⁴/₉

• ⁵/₉

A unit rate is a ratio with:

• A denominator of 1
• A numerator of 1

A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 16 customers per hour
• 15 customers per hour
• 12 customers per hour
• 20 customers per hour

What number is missing?

• 12
• 3
• 11
• 13