Percentage Of Numbers Free Math Quiz

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There is no field in this world that don’t use percentages. So it becomes inadvertently necessary to become fluent on how to find percentages. Percentages are calculated by taking the ratio of the quantity of given objects to the total and then scaling it by a multiplication factor of 100. For example, if there are 10 apples in a basket that has 100 fruits in all then apples constitute 10/100 times 100 which is 10 percent. The quiz here asks to do the reverse of this process where percentage and the total values are given and the quantity has to be estimated

Learn to find percentage of numbers

Percentage is a way of expressing a number as a part of 100. For example, if you score 80 out of 100 on a test, you can say that you got an 80% because 80 is the same as 80/100, or 80 out of 100.

A percentage can also be written as a decimal by moving the decimal point two places to the left. So, 80% can also be written as 0.80. To convert a decimal to a percentage, we move the decimal point two places to the right. For example, 0.8 can be written as 80%.

To find the percentage of a number, we can use the following formula:

percentage = (part / whole) x 100

For example, if you want to find what percentage of 60 is 12, you would use the formula like this:

percentage = (12 / 60) x 100 = 0.2 x 100 = 20%

We can also use this formula to find the part of a whole that corresponds to a certain percentage. For example, if you want to find what part of 60 is 20%, you would use the formula like this:

part = (percentage / 100) x whole

part = (20 / 100) x 60 = 0.2 x 60 = 12

So 20% of 60 is 12.

Percentages can also be used to compare two or more numbers. For example, if you want to know how much bigger one number is than another, you can find the percentage increase. The percentage increase is found using this formula:

percentage increase = (new value – old value) / old value x 100

For example, let’s say you bought a shirt for $40 and later you find out the price went up to $50. To find the percentage increase in price you would do:

percentage increase = (50-40)/40 x 100 = 25%

So the price of the shirt went up by 25%.

Similarly, if you want to know how much one number decreased in comparison to another, you would use the percentage decrease formula which is:

percentage decrease = (old value – new value) / old value x 100

For example, let’s say the original price of an item was $50 and it went down to $40, you would use the formula like this:

percentage decrease = (50-40) / 50 x 100 = 20%

So, the price went down by 20%.

Another commonly used percentage is the tip when eating out at a restaurant. Usually, the suggested tip ranges from 15% to 20% of the total bill.

For example, if you have a bill of $50 and you want to leave a 20% tip, you would use the formula like this:

tip = 20/100 x 50 = $10

So you would leave $10 as a tip.

In summary, percentage is a way to express a number as a part of 100 and is often used in comparisons. The basic formula for finding a percentage of a number is:

percentage = (part / whole) x 100

and to find the part corresponding to a certain percentage is:

part = (percentage / 100) x whole

You can also use the percentage increase and decrease formula to find how much a number has increased or decreased. These formulas and examples I’ve provided should give you a better understanding of how to work with percentages, and how it can be useful in real-life situations.