IM Unit 2 Review : Ratios

Front

What is a ratio?

Back

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

Front

How can ratios be expressed?

Back

Ratios can be expressed in several ways: as fractions, with a colon (e.g., 3:4), or with the word 'to' (e.g., 3 to 4).

Front

If a local Rec League orders 8 soccer balls for every 12 students, how many soccer balls would they order for 48 students?

Back

32 soccer balls.

Front

What is the cost per ticket if 3 fair tickets cost $24?

Back

$8 per ticket.

Front

How do you find the unit rate from a ratio?

Back

To find the unit rate, divide the first quantity by the second quantity.

Front

If Lin rode her skateboard 3 miles in 9 minutes, how long did it take her to go 1 mile?

Back

It took her 3 minutes to go 1 mile.

Front

What is the formula to find a missing value in a ratio?

Back

The formula is (part/whole) = (part/whole), where you can cross-multiply to find the missing value.

Front

What is an example of a ratio that is NOT valid?

Back

3.5 is NOT a valid way to write a ratio.

Front

How do you simplify a ratio?

Back

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

Front

What is the relationship between ratios and proportions?

Back

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