Ratios, unit rates and percents with double number lines

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 express a ratio?

Back

Ratios can be expressed in three ways: as a fraction (e.g., 1/2), with a colon (e.g., 1:2), or with the word 'to' (e.g., 1 to 2).

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per' (e.g., 60 miles per hour).

Front

How do you find a unit rate from a ratio?

Back

To find a unit rate, divide the first quantity by the second quantity to determine how much of the first quantity corresponds to one unit of the second.

Front

What is a percent?

Back

A percent is a ratio that compares a number to 100, often used to express how much of a whole is represented by a part.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply by 100.

Front

What is a double number line?

Back

A double number line is a visual representation that shows two related quantities along two parallel lines, helping to illustrate ratios and unit rates.

Front

How can you use a double number line to find equivalent ratios?

Back

You can use a double number line by marking equivalent ratios on both lines, allowing you to see the relationship between the two quantities.

Front

What is the purpose of a ratio table?

Back

A ratio table is used to organize pairs of numbers that form equivalent ratios, making it easier to identify patterns and solve problems.

Front

How do you determine the better buy between two products?

Back

To determine the better buy, calculate the unit price for each product and compare them; the lower unit price indicates the better buy.