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Q: What are the rules adding and subtracting exponents?

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Parentheses, exponents, multiplication and division, addition and subtraction.

You divide exponents by simply subtracting the exponents. You multiply exponents by adding them together. You can test your answers by doing long math.

This is effectively the same as lining up the decimal points when adding or subtracting ordinary decimal fractions.

Same.

It can be a problem to do with adding or subtracting or exponents.

Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.

Ensure that the denominators are the same when adding or subtracting fractions.

your mom is 2

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Fractional exponents follow the same rules as integral exponents. Integral exponents are numbers raised to an integer power.

Yes, it does.

David Missoula's

They aren't. The rules are the same as those for adding/subtracting or multiplying integers. Just be careful of the decimal point's location.

- when adding or subtracting in scientific notation, you must express the numbers as the same power of 10. This will often involve changing the decimal place of the coefficient.

If their denominators are different then find their lowest common denominator by means of their lowest common multiple remembering to adjust their numerators accordingly before adding or subtracting.

to subtrct integers ,rewrite as adding opposites and use the rules for addtion of integers..

When adding variables with exponents, you do neither. You only add the exponents if #1 The variables are the same character (such as they are both "a") #2 You are multiplying the variables (NOT ADDING, SUBTRACTING, OR DIVIDING) Using a simple concrete case may make this clearer: 10+2 times 10+3 equals 10+5 ( 100 times 1000 equals 100,000).

If you are adding or subtracting two numbers in scientific notation the exponents must be the same before adding the coefficients. This is similar to 'like terms' in algebraic expressions. You can't add 5x3 and 3x2 because the exponents are not the same.

line up the decimal point when your adding and subtracting. add annex a zero when you have extra number. sometimes you can use a number line.

Adding integers, if they have the same sign, add their absolute values and keep the same sign. Subtracting, change the sign of the 2nd number and the add using rules of addition. Multiplying and dividing, Divide the absolute values, if the signs are the same the answer is positive, if the signs are different the answer is negative.

Subtracting a fraction is the same as adding its negative.

just use the PEMDAS system. p-parenthesis e-exponents m-multiplication d-division a-adding s-subtracting

I learned to always change the denominators before adding or subtracting the numerators. You must always have a common denominator before adding or subtracting.

According to the rules of exponents, nx/ny = nx-y. For example, 22/22 = 4/4 = 1. Subtracting the exponents gives 22-2 = 20. Therefore, 20 = 1.

The order of opperations in math is perenthiseis, exponents, multiplication, division, adding, and subtracting. People remember it by reffering to it as PEMDAS or Please Excuse My Dear Aunt Sally.