Solving Proportions

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Tags

CCSS.7.RP.A.2A

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the variable.

Tags

CCSS.7.RP.A.2C

Front

If 5 ice cream cones are sold for every 3 brownies, what is the ratio of ice cream cones to brownies?

Back

The ratio of ice cream cones to brownies is 5:3.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If there are 24 brownies sold, how many ice cream cones are sold?

Back

If 5 cones are sold for every 3 brownies, then 40 ice cream cones are sold when 24 brownies are sold.

Tags

CCSS.6.RP.A.3B

Front

What is the unit rate?

Back

The unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity of one.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find the cost per item?

Back

To find the cost per item, divide the total cost by the number of items.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a pizza has 8 slices and costs $12, what is the cost per slice?

Back

The cost per slice is $1.50.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the formula for speed?

Back

Speed = Distance / Time.

Tags

CCSS.6.EE.B.7

Front

If a car travels 120 miles in 3 hours, what is its speed?

Back

The speed is 40 miles per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find the time taken to travel a certain distance at a constant speed?

Back

Time = Distance / Speed.

Tags

CCSS.6.RP.A.3B