Understanding Percentages and Quantities

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It represents how much of something there is out of a total 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 25% of 200, calculate 200 x 0.25 = 50.

Front

What does a 25% discount mean?

Back

A 25% discount means that the price is reduced by 25 out of every 100 units of currency. For example, if an item costs $100, a 25% discount would reduce the price to $75.

Front

If 10% of a number is 25, how do you find the whole number?

Back

To find the whole number, divide 25 by 0.10 (which is 10% in decimal form). So, 25 ÷ 0.10 = 250.

Front

What is the formula to find the sale price after a discount?

Back

Sale Price = Original Price - (Discount Percentage x Original Price).

Front

How do you find 75% of a number?

Back

To find 75% of a number, multiply the number by 0.75. For example, 75% of 160 is 160 x 0.75 = 120.

Front

What is 35% of 80?

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To find 35% of 80, multiply 80 by 0.35. So, 80 x 0.35 = 28.

Front

If 40% of a number is 80, how do you find the whole number?

Back

To find the whole number, divide 80 by 0.40 (which is 40% in decimal form). So, 80 ÷ 0.40 = 200.

Front

What does it mean to find a percentage of a quantity?

Back

Finding a percentage of a quantity means calculating how much that percentage represents in terms of the total quantity.

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How can percentages be used in real life?

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Percentages are used in various real-life situations, such as calculating discounts, tax rates, interest rates, and statistics.