Ratios Flashcard 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 write a ratio?

Back

Ratios can be written in three ways: using a colon (3:4), as a fraction (3/4), or with the word 'to' (3 to 4).

Front

If the ratio of girls to boys is 3:8 and there are 48 boys, how many girls are there?

Back

18

Front

How do you convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100 and add a percent sign. For example, 0.98 x 100 = 98%.

Front

What is 40% as a decimal?

Back

0.4

Front

How do you convert a percent to a fraction?

Back

To convert a percent to a fraction, write the percent over 100 and simplify if possible. For example, 86% = 86/100 = 43/50.

Front

What is the missing number in the ratio table if the ratio is 3:5 and the known value is 15?

Back

The missing number is 25.

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, even if the numbers are different.

Front

How do you find a missing value in a ratio?

Back

To find a missing value in a ratio, set up a proportion and solve for the unknown value.

Front

What is the relationship between fractions and ratios?

Back

Fractions can be considered as ratios where the numerator is compared to the denominator.