Ratios, Proportions, Decimals, Percent 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

What is a proportion?

Back

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

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100.

Front

What is 20% of 80?

Back

16

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 multiply by 100.

Front

What is 1/5 as a percentage?

Back

20%.

Front

How do you find the total cost of multiple items?

Back

Multiply the cost of one item by the number of items.

Front

If Kaleigh buys 7 apps for $3 each, how much does she spend?

Back

$21.

Front

How is 7% written as a decimal?

Back

0.07.

Front

What is the formula to find a percentage of a number?

Back

Percentage = (Part/Whole) x 100.