Ratios and Proportions Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a proportion?

Back

A proportion is a statement that two ratios are equal.

Tags

CCSS.7.RP.A.2A

Front

If a recipe calls for 2 cups of sugar for every 3 cups of flour, what is the ratio of sugar to flour?

Back

The ratio of sugar to flour is 2:3.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find a missing value in a proportion?

Back

Cross-multiply the known values and solve for the unknown.

Tags

CCSS.7.RP.A.2B

Front

What is the scale of a map?

Back

The scale of a map shows the relationship between a distance on the map and the actual distance it represents.

Tags

CCSS.7.RP.A.2C

Front

If 4 cm on a map represents 10 km, how many kilometers does 1 cm represent?

Back

1 cm represents 2.5 km.

Tags

CCSS.6.RP.A.3B

Front

What is the formula for finding equivalent ratios?

Back

Two ratios a:b and c:d are equivalent if a*d = b*c.

Tags

CCSS.6.RP.A.3A

Front

If 3/4 of a pizza is left and you eat 1/2 of that, how much of the whole pizza do you eat?

Back

You eat 3/8 of the whole pizza.

Tags

CCSS.5.NF.B.6

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second is the denominator.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a car travels 60 miles in 1 hour, what is its speed in miles per minute?

Back

The speed is 1 mile per minute.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2