ratios and proportions

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

What is a proportion?

Back

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

Front

How do you determine if two ratios form a proportion?

Back

Two ratios form a proportion if the cross products are equal.

Front

What is the formula to find the price per gallon if the total cost and gallons are known?

Back

Price per gallon = Total cost / Number of gallons.

Front

If a table shows values that increase at the same rate, does it represent a proportional relationship?

Back

Yes, if the values increase at the same rate, it represents a proportional relationship.

Front

What is the ratio of 4 birds to 6 snakes in simplest form?

Back

The simplest form of the ratio 4:6 is 2:3.

Front

If 3/4 of a pizza is left and you eat 1/4, what fraction of the pizza is left?

Back

1/2 of the pizza is left.

Front

What does it mean if two quantities are in direct proportion?

Back

If two quantities are in direct proportion, as one quantity increases, the other quantity increases at a constant rate.

Front

How can you express the ratio of 10 apples to 5 oranges?

Back

The ratio can be expressed as 10:5 or simplified to 2:1.

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 quantity is the denominator.