Rations/ 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.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the total quantity by the number of units. For example, if 10 apples cost $5, the unit rate is $5 ÷ 10 = $0.50 per apple.

Front

What is a unit price?

Back

The unit price is the cost for one unit of a product, which helps compare prices of different sizes or quantities.

Front

If Daniel spent $2.00 for 20 pieces of gum, what is the unit price per piece?

Back

$2.00 ÷ 20 = $0.10 per piece.

Front

If Jude spent $1.50 for 10 pieces of gum, what is the unit price per piece?

Back

$1.50 ÷ 10 = $0.15 per piece.

Front

What is the better deal: $2.00 for 20 pieces of gum or $1.50 for 10 pieces?

Back

$2.00 for 20 pieces is the better deal because the unit price is lower.

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as a/b, where 'a' is the numerator and 'b' is the denominator.

Front

In the ratio of green counters to blue counters 4:5, what fraction of the counters are green?

Back

4 out of a total of 9 counters, so the fraction is 4/9.

Front

In the ratio of red counters to blue counters 3:1, what fraction of the counters are blue?

Back

1 out of a total of 4 counters, so the fraction is 1/4.

Front

How do you compare two unit prices?

Back

To compare two unit prices, calculate the unit price for each item and see which one is lower.