Ratio, Rates and Proportions Flashcard

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative size of one quantity to another.

Front

Define a rate.

Back

A rate is a ratio that compares quantities with different units.

Front

What is a proportion?

Back

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

Front

Back

j = 16.5

Front

Back

w = 18

Front

If there are 3 STARS and 4 SQUARES, what is the ratio of STARS to SQUARES?

Back

3 to 4

Front

What is the cross-multiplication method used for?

Back

Cross-multiplication is used to solve proportions by multiplying the numerator of one ratio by the denominator of the other ratio.

Front

If a recipe calls for a ratio of 2:3 of sugar to flour, how much sugar is needed for 6 cups of flour?

Back

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

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

Front

Back

x = 8.