# 3.05 Unit rates

## Interactive practice questions

Tricia reads $20$20 pages of her book in $2$2 hours.

Which of the following is the unit rate of pages per hour?

$10$10 pages/hr

A

$2$2 pages/hr

B

$20:2$20:2

C

$10:1$10:1

D

$10$10 pages/hr

A

$2$2 pages/hr

B

$20:2$20:2

C

$10:1$10:1

D
Easy
Less than a minute

A car travels $320$320 km in $4$4 hours.

A tap fills up a $240$240 liter tub in $4$4 hours.

A toy manufacturer makes $720$720 toys in $9$9 hours.

### Outcomes

#### 6.RP.A.2

Understand the concept of a unit rate a/b associated with a ratio a:b with b ≠ 0, and use rate language in the context of a ratio relationship. "Expectations for unit rates in this grade are limited to non-complex fractions.

#### 6.RP.A.3

Use ratio and rate reasoning to solve real-world and mathematical problems, e.g. By reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.

#### 6.RP.A.3b

Solve unit rate problems including those involving unit pricing and constant speed.