6.1 & 6.12 Ratios, Rates, & 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

How do you simplify a ratio?

Back

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

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as speed (miles per hour) or price per item.

Front

What is a proportion?

Back

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

Front

How do you find an equivalent ratio?

Back

To find an equivalent ratio, multiply or divide both terms of the ratio by the same non-zero number.

Front

If 2 tablets disinfect 1 quart of water, how many tablets are needed for 3 quarts?

Back

6 tablets.

Front

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

Back

If a:b = c:d, then ad = bc.

Front

Which of the following ratios are equivalent to 4:5? 8:10, 12:15, 16:20, 5:4

Back

5:4 is NOT equivalent.

Front

How do you convert a ratio to a percentage?

Back

To convert a ratio to a percentage, divide the first number by the second number and multiply by 100.

Front

What is the unit rate of 60 miles in 2 hours?

Back

30 miles per hour.