Ratios, Rates & Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or 'a:b'.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD) until no further simplification is possible.

Front

What is the ratio of blue marbles to red marbles if there are 3 blue and 7 red marbles?

Back

3 : 7

Front

If there are 12 squares and 6 circles, what is the simplified ratio of squares to circles?

Back

2 : 1

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 'x per 1 unit'.

Front

How do you find the unit rate from a total cost and quantity?

Back

To find the unit rate, divide the total cost by the quantity to determine the cost per one unit.

Front

If an 8 pack of juice boxes costs $4.79, what is the unit price?

Back

$4.79 ÷ 8 = $0.59875 per juice box.

Front

What is the better buy: an 8 pack for $4.79 or a 12 pack for $6.59?

Back

The 12 pack is the better buy because it has a lower unit price.

Front

What is the ratio of blue marbles to the total number of green and red marbles if there are 8 green, 3 blue, and 7 red marbles?

Back

1 : 5

Front

What does it mean to compare ratios?

Back

Comparing ratios involves determining which of two or more ratios is greater, smaller, or equivalent.