Ratios and proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities expressed as a fraction, indicating how many times one value contains or is contained within the other.

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they can be simplified to the same fraction.

Front

What happens when you multiply both numbers in a ratio by the same number?

Back

The ratio remains equivalent.

Front

If you have the ratio 1:2, what is the result of multiplying both numbers by 2?

Back

2:4

Front

What is the next equivalent ratio after 2:4 if you multiply both numbers by 2 again?

Back

8:16

Front

What is one equivalent ratio to 3:5 if you multiply both numbers by 2?

Back

6:10

Front

Which of the following is NOT an equivalent ratio to 3:5? 6:10, 9:15, 12:20, 5:10

Back

5:10

Front

How can you find equivalent ratios?

Back

You can find equivalent ratios by multiplying or dividing both terms of the ratio by the same non-zero number.

Front

What is the ratio of 4 to 8 in simplest form?

Back

1:2

Front

If a recipe calls for a ratio of 2:3 of sugar to flour, how much flour is needed for 4 cups of sugar?

Back

6 cups of flour (4 cups sugar x 3/2 = 6 cups flour).