Percent Proportion Practice

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you find what percent one number is of another?

Back

To find what percent one number (A) is of another number (B), use the formula: (A/B) x 100.

Front

What is the formula to calculate the total cost including a tip?

Back

Total Cost = Meal Cost + (Tip Percentage x Meal Cost).

Front

If 18 is 40% of a number, how do you find that number?

Back

Use the formula: Number = 18 / 0.40, which equals 45.

Front

What is 20% of a number?

Back

To find 20% of a number, multiply the number by 0.20.

Front

If there are 4 milk chocolates for every 2 dark chocolates, what is the ratio of milk to dark chocolates?

Back

The ratio of milk to dark chocolates is 4:2, which simplifies to 2:1.

Front

How do you calculate the number of milk chocolates if you know the number of dark chocolates?

Back

If there are 34 dark chocolates and the ratio is 2:1, then the number of milk chocolates is 34 x (4/2) = 68.

Front

What is the percent increase if a price goes from $20 to $28?

Back

Percent Increase = ((New Price - Old Price) / Old Price) x 100 = ((28 - 20) / 20) x 100 = 40%.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.

Front

What is the relationship between fractions, decimals, and percents?

Back

Fractions, decimals, and percents are different ways to represent the same value. For example, 1/2 = 0.5 = 50%.