Ms. Ellis Ratios

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.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms of the ratio by their greatest common divisor (GCD).

Front

What is the ratio of 8 to 12?

Back

The ratio of 8 to 12 can be simplified to 2 to 3.

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they can be simplified to the same fraction.

Front

How can ratios be expressed?

Back

Ratios can be expressed in three ways: as a fraction (8/12), with a colon (8:12), or with the word 'to' (8 to 12).

Front

What is a part-to-part ratio?

Back

A part-to-part ratio compares different parts of a whole, such as the ratio of boys to girls in a class.

Front

What is a part-to-whole ratio?

Back

A part-to-whole ratio compares a part of a quantity to the entire quantity, such as the ratio of boys to the total number of students.

Front

If a recipe calls for a ratio of 2:3 for sugar to flour, how much sugar is needed for 6 cups of flour?

Back

To find the amount of sugar needed, set up the ratio: 2/3 = x/6. Solving for x gives x = 4 cups of sugar.

Front

What is the scale factor in a ratio?

Back

The scale factor is the number that scales, or multiplies, the dimensions of an object in a ratio, maintaining the same proportions.

Front

How do you find the total parts in a ratio?

Back

To find the total parts in a ratio, add the individual parts together. For example, in a ratio of 2:3, the total parts are 2 + 3 = 5.