Ratios and Percentages in Context

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 convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply the result by 100.

Front

What is the formula for calculating percentage?

Back

Percentage = (Part / Whole) x 100.

Front

If 60% of a wall is painted, what fraction of the wall is painted?

Back

3/5 of the wall is painted.

Front

What does it mean if a model represents 20%?

Back

It means that 20 out of every 100 equal parts of the model are shaded or filled.

Front

How do you find the shaded area in a grid?

Back

Count the number of shaded squares and divide by the total number of squares, then multiply by 100 to get the percentage.

Front

What is the relationship between ratios and percentages?

Back

Ratios can be expressed as percentages by converting the ratio into a fraction and then into a percentage.

Front

If a mural is 68% shaded, how much of it is not shaded?

Back

32% of the mural is not shaded.

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100.

Front

How do you calculate the area of a rectangle?

Back

Area = Length x Width.