Rate and Time Word Problems

Front

What is a rate in mathematics?

Back

A rate is a ratio that compares two different quantities, often expressed as a quantity per unit of time, such as miles per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you calculate the total number of problems solved in an hour if you know the number solved in a fraction of an hour?

Back

To find the total number of problems solved in an hour, divide the number of problems solved by the fraction of the hour it took, then multiply by 1 hour.

Tags

CCSS.7.RP.A.1

Front

If Ryan solved 4 1/4 math problems in 1/8 of an hour, how many problems does he solve in 1 hour?

Back

34 math problems.

Tags

CCSS.7.RP.A.1

Front

What is the formula to find the time taken to complete a task based on a part of the task completed?

Back

Time = (Total work) / (Work done per unit time).

Tags

CCSS.6.EE.B.7

Front

If Sarah takes 1/3 of an hour to complete 1/4 of her reading assignment, how long will it take her to finish the entire assignment?

Back

1 1/3 hours or 4/3 hours.

Tags

CCSS.7.RP.A.1

Front

How do you find the speed if you know the distance and time?

Back

Speed = Distance / Time.

Tags

CCSS.8.EE.C.7B

Front

If Sarah runs 42.3 miles in 2 hours, how many miles does she run in 1 hour?

Back

21.15 miles.

Tags

CCSS.6.NS.B.3

Front

What is a proportional relationship?

Back

A proportional relationship is one where two quantities maintain a constant ratio or rate.

Tags

CCSS.7.RP.A.2A

Front

Which example does not show a proportional relationship?

Back

A pizza costs $12 for the first pizza and $8 for each additional pizza.

Tags

CCSS.7.RP.A.2A

Front

How do you calculate the discount on an item?

Back

Discount = Original Price x Discount Rate.

Tags

CCSS.7.RP.A.3