Lesson 13 Study Guide

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:b'.

Front

How do you find an equivalent ratio?

Back

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

Front

If Isabella sells 24 hats every 3 days, how many hats does she sell per day?

Back

Isabella sells 8 hats per day (24 hats ÷ 3 days = 8 hats/day).

Front

What is the formula to find the total number of items sold over a period of time?

Back

Total items sold = (items sold per day) × (number of days).

Front

What does it mean if a statement is 'True' or 'False'?

Back

'True' means the statement is correct, while 'False' means the statement is incorrect.

Front

What is the relationship between hot dogs and potato salad in a ratio of 5:4?

Back

In a ratio of 5:4, for every 5 hot dogs, there are 4 cups of potato salad.

Front

How can you express the ratio of cups of potato salad to hot dogs if there are 12 cups of potato salad and 35 hot dogs?

Back

The ratio can be expressed as 12:35.

Front

What is an equivalent ratio to 12:35?

Back

An equivalent ratio could be 24:70 (by multiplying both terms by 2).

Front

How do you determine if two ratios are equivalent?

Back

Two ratios are equivalent if their cross products are equal.

Front

What is the cross product of the ratios 12:35 and 16:14?

Back

The cross product is 12 × 14 and 35 × 16. If they are equal, the ratios are equivalent.