Proportions Review

Front

What is a proportion?

Back

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

Front

How do you convert millimeters to centimeters?

Back

To convert millimeters to centimeters, divide the number of millimeters by 10.

Front

If 1 gallon equals 4 quarts, how many quarts are in 2 gallons?

Back

There are 8 quarts in 2 gallons (2 gallons x 4 quarts/gallon = 8 quarts).

Front

What is the formula to estimate a population based on a sample?

Back

Estimated population = (Number of individuals in sample / Total sample size) x Total population size.

Front

How do you convert kilograms to grams?

Back

To convert kilograms to grams, multiply the number of kilograms by 1,000.

Front

If a 12-ounce shampoo bottle lasts 16 weeks, how long would an 18-ounce bottle last?

Back

An 18-ounce bottle would last 24 weeks (18 oz / 12 oz = 1.5; 1.5 x 16 weeks = 24 weeks).

Front

What is a ratio?

Back

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

Front

How do you find a missing value in a proportion?

Back

Cross-multiply the known values and then divide to find the missing value.

Front

What is the relationship between quarts and gallons?

Back

1 gallon is equal to 4 quarts.

Front

How do you calculate the expected number of a specific type of fish in a population?

Back

Use the formula: (Number of specific fish in sample / Total fish in sample) x Total estimated population.