Best Answer

Positive plus positive is positive.

Negative plus negative is negative.

Positive plus negative is positive if the absolute value of the positive number is greater than the absolute value of the negative one.

Positive plus negative is negative if the absolute value of the negative number is greater than the absolute value of the positive one.

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Q: What are the rules for adding numbers whose signs are different?

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sometimes true (when the rational numbers are the same)

If you mean integers, well if you have two integers of the same sign that you are adding, add and the sign stays the same. If you have different signs, subtract and keep the sign of the one that has more. Regular numbers you just add them.

Temporarily ignore the signs and multiply or divide as usualIf signs of the two numbers to be multiplied or divided, add + sign to your answer. If signs are different, add - ( minus) to your answer.+ signs are optional-- a number without a sign is assumed to be positive.

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.

If you're adding a positive amount, keep the + sign; if you're adding a negative amount, multiply the + and - signs to convert it into a subtraction. Example: 4 + (-5) = 4 (+*-) 5 = 4 - 5 = -1

Related questions

Same rules as adding whole numbers with different signs.

Then you are adding two rational numbers with different signs! No big deal!

You could be adding numbers that have different signs. Just a guess.

-You must memorize -To add 2 integers with different signs, find the difference of their absolute value -To subtract an integer, add it's opposite

The answer also has the same sign.

sometimes true (when the rational numbers are the same)

If you mean integers, well if you have two integers of the same sign that you are adding, add and the sign stays the same. If you have different signs, subtract and keep the sign of the one that has more. Regular numbers you just add them.

Positive.

if the signs are different then u put the larger sing down then u subtract if if the signs are the same then u put the same sign down then u add

Temporarily ignore the signs and multiply or divide as usualIf signs of the two numbers to be multiplied or divided, add + sign to your answer. If signs are different, add - ( minus) to your answer.+ signs are optional-- a number without a sign is assumed to be positive.

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.

-- Temporarily ignore the signs. -- Add the numbers without their signs. -- Give the sum the same sign as the original two numbers have.

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