What are Percentages?
In order to recognise and calculate percentages, we need to understand two basic concepts:
In order to recognise and calculate percentages, we need to understand two basic concepts:
When we are discussing percentages, one should always ask the question "percentage of what?", meaning, there must be some whole from which the percentage is calculated. The whole serves as a reference point for the percentages.
Calculate 30 over 100 as a percentage:
Let's demonstrate this using two examples.
What is of ?
Solution:
When we are asked to find a part () of a whole (), we need to multiply the part by the whole.
Therefore we obtain the following:
A shirt originally cost dollars and it's currently on sale with a discount.
We are asked to calculate the price of the shirt after the price reduction.
Solution:
After the price reduction, the shirt's price is (before the reduction the price was ).
is actually .
In order to calculate of , we perform a simple multiplication - .
In other words, the price of the shirt after the price reduction is dollars.
Calculate 3% of 100:
Calculate 32 over 100 as a percentage:
Calculate 25 over 100 as a percentage:
Calculate 15% of 100:
To find 15% of 100, you can convert the percentage to a decimal by dividing by 100:
Next, multiply this decimal by 100:
Thus, 15% of 100 is 15.
Calculate 35% of 100:
To find 35% of 100, first convert the percentage into a decimal by dividing by 100: .
Then, multiply this decimal by 100: .
Therefore, 35% of 100 is .
Calculate 3% of 100:
To solve this problem, we'll proceed with the following steps:
Therefore, the 3% of 100 is .
3
Calculate 45% of 100:
To find 45% of 100, you can multiply the percentage as a decimal by the whole number. First, convert 45% into a decimal. This is done by dividing by 100: .
Then, multiply this decimal by 100: .
Therefore, 45% of 100 is .
Calculate 50% of 100:
In order to determine 50% of 100, we first convert the percentage into a decimal. Convert 50% to a decimal: .
Next, multiply the decimal by 100 to get the percentage value: .
Therefore, 50% of 100 is .