7.3 Proportions Test

Front

What is a proportion?

Back

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

Front

How do you calculate the percentage of a quantity?

Back

To calculate the percentage, divide the part by the whole and multiply by 100.

Front

What is the formula to convert miles to meters?

Back

1 mile = 1,609.34 meters.

Front

How do you find the total amount of a mixture given a ratio?

Back

Multiply the amount of one part of the ratio by the total parts to find the total amount.

Front

What does a scale on a map represent?

Back

A scale on a map shows the relationship between a distance on the map and the actual distance in real life.

Front

How do you set up a proportion to solve for an unknown?

Back

Set the two ratios equal to each other and cross-multiply to solve for the unknown.

Front

What is the relationship between distance, rate, and time?

Back

Distance = Rate × Time.

Front

How do you convert a fraction to a percentage?

Back

Divide the numerator by the denominator and multiply by 100.

Front

What is the ratio of powdered drink mix to water in Sandy's drink?

Back

The ratio is 2 teaspoons of drink mix per 1 gallon of water.

Front

How do you find the distance on a map using the scale?

Back

Measure the distance on the map and multiply by the scale factor to find the actual distance.