Percent of a Number

Front

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

Back

To calculate the percentage of a number, use the formula: (Percentage / 100) * Total Number.

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 50% of a number?

Back

50% of a number is equivalent to half of that number.

Front

How do you find 10% of a number?

Back

To find 10% of a number, divide the number by 10.

Front

What is the relationship between percentages and fractions?

Back

Percentages can be expressed as fractions by placing the percentage over 100 (e.g., 25% = 25/100 = 1/4).

Front

If a student scored 80% on a test with 50 questions, how many questions did they answer correctly?

Back

To find the number of correct answers, calculate 80% of 50: (80/100) * 50 = 40 questions.

Front

What is 25% of 200?

Back

25% of 200 is 50, calculated as (25/100) * 200.

Front

How do you calculate the percentage increase from 40 to 50?

Back

Percentage increase = ((New Value - Old Value) / Old Value) * 100 = ((50 - 40) / 40) * 100 = 25%.

Front

What is 15% of 60?

Back

15% of 60 is 9, calculated as (15/100) * 60.

Front

If a product costs $80 and is on sale for 20% off, what is the sale price?

Back

Sale price = Original Price - (Discount Percentage * Original Price) = 80 - (20/100 * 80) = $64.