Proportional Reasoning Review

Front

How many ounces are equivalent to 1 pound?

Back

16 ounces.

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

If the ratio of girls to boys is 5 to 6, what does this mean?

Back

For every 5 girls, there are 6 boys.

Front

How do you find the equivalent amount in ounces for a given number of pounds?

Back

Multiply the number of pounds by 16 (since 1 pound = 16 ounces).

Front

If 4.5 cups of flour makes 11 cookies, how many cups are needed for 1 cookie?

Back

0.409 cups (4.5 cups / 11 cookies).

Front

What is the total number of cookies that can be made with 18 cups of flour?

Back

You can make 44 cookies (18 cups / 0.409 cups per cookie).

Front

How do you set up a proportion?

Back

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

Front

If 16 out of 90 people have 1 dog, how do you find the expected number of dog owners in a larger group?

Back

Use the ratio 16/90 and multiply it by the total number of people in the larger group.

Front

What is the expected number of people with 1 dog in a park of 1,800 people?

Back

320 people (16/90 * 1800).

Front

How do you scale a recipe?

Back

To scale a recipe, multiply each ingredient by the same factor to maintain the proportions.