Unit 2 Review

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 express a ratio?

Back

Ratios can be expressed in three ways: using a colon (e.g., 5:7), as a fraction (e.g., 5/7), or in words (e.g., '5 to 7').

Front

What is the ratio of red to green marbles if there are 5 red and 7 green marbles?

Back

5:7

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, 13% of 43 is calculated as 43 * 0.13 = 9.12.

Front

What is 13% of 43?

Back

9.12

Front

What is a double number line?

Back

A double number line is a visual representation that shows two sets of numbers and their relationships, often used to solve problems involving ratios.

Front

If there are 36 donuts in 3 boxes, how many donuts are in 10 boxes?

Back

120 donuts.

Front

What is the ratio of graphic novels to non-fiction books if Sue read 8 graphic novels and 5 non-fiction books?

Back

8 to 5.

Front

How do you calculate winning percentage?

Back

Winning percentage is calculated by dividing the number of wins by the total number of games played, then multiplying by 100.

Front

If a baseball team has lost 50 matches out of 120, what is their winning percentage?

Back

59%.