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A percentage can represent a fraction (like 50% = 1/2); however, percentages represent a portion of something else. So percentages are not under normal circumstances just subtracted from a number.
So say you have something like: How much is 30% off from $80 (or it might say 30% off of $80). This means there will be a subtraction, but you do not do it like change 30% to 30/100, then subtract to get $79.70.
The 30% is a portion of the original amount, so it is first multiplied by $80: (30/100) x 80 = 24. So it is $24 that you are taking off from the $80.
The 30% discount represents $24, and when you take 30% off, the new price is [$80 - $24 = $56].
If you are adding a percentage (like sales tax), you multiply the percentage by the amount, then add that to get the total sales price. So in our example, say the tax is 5%, we multiply (5/100) x the sales price of $56 = $2.80, then add $2.80 tax to $56 = $58.80
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How do you subtract decimal numebrs?
If you can subtract whole numbers you can subtract decimals. Forget about the decimal for a sec and subtract the numbers as if they were whole numbers. 2.5 -1.4 =1.1 hope this helps and if not yahoo usually has good examples.
How do you add percents from whole numbers?
is that question "how to add percents to whole numbers?but isn't this just basically addition?convert the percent to a fraction (75%=75/100) then to a decimal (75/100=0.75) and add to the whole number. i guess everyone know how addition works!
When you subtract fraction with whole numbers and you have to borrow them can you borrow the whole number twice?
No.
Why are different whole numbers not always a whole number?
Different whole numbers are always whole numbers, but I suspect you meant to ask about the difference between whole numbers. You can subtract two whole numbers and get a negative result. Whole numbers can't be negative.
What are the 4 fundamental operations on whole numbers?
add, subtract, multiply, divide
Mixed numbers combine fractions and percents?
True
How do you subtract decimal numebrs?
If you can subtract whole numbers you can subtract decimals. Forget about the decimal for a sec and subtract the numbers as if they were whole numbers. 2.5 -1.4 =1.1 hope this helps and if not yahoo usually has good examples.
Why do you use percents?
Percents are basically decimals, and we use decimals as numbers with extra, tiny proportions. Percents are just ways to make those decimals into a whole, more friendlier number. But, percents can also be made with decimals as well.
How do you subtract whole numbers by fractions?
Simplify them.
How do you add percents from whole numbers?
is that question "how to add percents to whole numbers?but isn't this just basically addition?convert the percent to a fraction (75%=75/100) then to a decimal (75/100=0.75) and add to the whole number. i guess everyone know how addition works!
Is the difference of two whole numbers always a whole number?
No. You can subtract two whole numbers and get a negative result. Whole numbers can't be negative.
percents?
percents are numbers over 100
When you subtract fraction with whole numbers and you have to borrow them can you borrow the whole number twice?
No.
Why are different whole numbers not always a whole number?
Different whole numbers are always whole numbers, but I suspect you meant to ask about the difference between whole numbers. You can subtract two whole numbers and get a negative result. Whole numbers can't be negative.
How do you subtract mixed numbers with regrouping?
you take away one of the whole number=then you add or subtract your fractions=
When two whole numbers are subtracted does it affect the difference?
When you subtract one number from another, the result is called the difference. What does your question mean? If by "when two whole numbers are subtracted" you mean that you subtract one whole number from the minuend, and then you subtract another whole number from the difference, then the answer you get is another difference. In effect, you have one minuend and two subtrahends.
What are the 4 fundamental operations on whole numbers?
add, subtract, multiply, divide
