Percent of a Number

Front

What does 'percent' mean in mathematics?

Back

Percent means 'per hundred' and is a way to express a number as a fraction of 100.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 50, calculate 50 * 0.20.

Front

What is 50% of a number?

Back

50% of a number is half of that number.

Front

What is the formula to find 'x' percent of 'y'?

Back

The formula is (x/100) * y.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 25% becomes 0.25.

Front

What is 10% of 200?

Back

10% of 200 is 20.

Front

What is 75% of 80?

Back

75% of 80 is 60.

Front

If a shirt costs $40 and is on sale for 25% off, what is the sale price?

Back

The sale price is $30. (25% of $40 is $10, so $40 - $10 = $30.)

Front

What is 1% of 300?

Back

1% of 300 is 3.

Front

How do you find the percentage increase from 50 to 75?

Back

To find the percentage increase, subtract the original number from the new number, divide by the original number, and multiply by 100. ((75 - 50) / 50) * 100 = 50%.