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Q: How do you use subtraction in the real world?

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when u r adding prices it helps alot i am also in school learning addition and subtraction so i know how u feel but if u like to shop then it's very helpful

that we can use it

It is called the minus sign. - .

you can not use commutative property for subtraction because if you switch them around you will end up with a negative number.

You use fractions for LOTS of things in the real world like money, gambling, shopping, clothing, etc.

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you would use subtraction in the real world if you have money. Let's say you have $20, you want to buy something for $17. how much money would you have left? answer:$3

Real numbers are closed under addition and subtraction. To get a number outside the real number system you would have to use square root.

pray............ ask your parents and friends..................

A set of real numbers is closed under subtraction when you take two real numbers and subtract , the answer is always a real number .

No you can not use subtraction or division in the associative property.

Subtraction is definitely an operation defined on real numbers. I'm guessing you are actually asking why subtraction is not included as a commutative operation, this is because a-b is not always equal to b-a.

A subtraction sum will contain a minus sign.

multiplication-addition-subtraction-division

Real numbers are commutative (if that is what the question means) under addition. Subtraction is a binary operation defined so that it is not commutative.

Adding up an amount on a deposit slip to give to your bank is one example. The possibilities are endless.

when u r adding prices it helps alot i am also in school learning addition and subtraction so i know how u feel but if u like to shop then it's very helpful

You don't. You use the GCF to reduce the answer once the addition or subtraction is complete.

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