Proportions Review

Front

What is a proportion?

Back

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

Front

How do you calculate tax on a purchase?

Back

To calculate tax, multiply the original price by the tax rate (as a decimal).

Front

Convert 1 liter to milliliters.

Back

1 liter = 1000 milliliters.

Front

If 0.26 gallons is approximately 1 liter, how many liters are in 20 gallons?

Back

20 gallons is approximately 76.92 liters.

Front

What is the formula to convert milliliters to liters?

Back

Divide the number of milliliters by 1000.

Front

If a bag of popcorn costs $3, how much do 20 bags cost?

Back

20 bags cost $60.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions show that two ratios are equal.

Front

How do you find a missing value in a ratio table?

Back

Use cross-multiplication to find the missing value.

Front

What is the tax amount on a $45.50 item with a 6% tax rate?

Back

The tax amount is $2.73.

Front

If a recipe calls for 2 cups of flour and you want to make half the recipe, how much flour do you need?

Back

You need 1 cup of flour.