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 20% of 50?

Back

20% of 50 is 10.

Front

What does it mean if a number is 60% of another number?

Back

It means that the first number is 60 out of 100 parts of the second number.

Front

How do you find the percentage of a shaded area in a shape?

Back

To find the percentage of a shaded area, divide the area of the shaded part by the total area and multiply by 100.

Front

What is the formula for calculating percentage?

Back

Percentage = (Part / Whole) x 100.

Front

If Troy completed 7/8 of his exam, how do you express this as a percentage?

Back

To express 7/8 as a percentage, divide 7 by 8 to get 0.875, then multiply by 100 to get 87.5%.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.

Front

What is a percentage?

Back

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

Front

How do you find 45% of a number?

Back

To find 45% of a number, multiply the number by 0.45.