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Addition and Subtraction of Positive and Negative numbers is very simple once you grasp the knowledge of how to do it.

Simply remember when a + and a - are together you - the values and when the signs are the same you + the values.

-+ = -

+- = -

++ = +

-- = +

Examples:

[1] 10 + -9 = 10 (+-) 9 = 10 - 9 = 1

[2] 10 - +9 = 10 (-+) 9 = 10 - 9 = 1

[3] 10 + +9 = 10 (++) 9 = 10 + 9 = 19

[4] 10 - - 9 = 10 (--) 9 = 10 - 9 = 1

Note : The above is much too complex for younger student minds.

FIRST Rule : Gather together all the numbers with the same signs. Then add all the positive numbers together. Do the same for the negatives.

Finally, subtract the negative total from the positive total, to get the final combined total or answer.

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Q: What are the rules for adding and subtracting negative and positive numbers?
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Related questions

How do you substract negative numbers?

Subtracting negative numbers is exactly the same as adding the positive number.


What is equivalent to adding a negative number?

Subtracting its additive inverse. (In principle, this is valid for adding positive numbers as well.)


How is adding to negative integers the same as and different from subtracting two positive integers?

No- adding negative numbers is like adding positive numbesr , except the answer is negative.


What is similar to subtracting two positive integers?

Subtracting two positive fractional numbers, or adding one positive and one negative integer.


What are the rules for adding and subtracting integers?

when you add two positive integers the answer is always positive when you add two negative integers the answer is positive when you add one negative and on positive integer, the answer is negative subtracting two negative numbers gets a negative answer subtracting two positive numbers- the answer depends subtracting a negative and positive number- the answer depends, the positive number would have to be bigger than the negative to achieve a negative number, and if the positive number is less, than the answer is still negative


What is adding and subtracting integers?

Integers are whole numbers, both positive and negative. Therefore, adding and subtracting integers would be adding and subtracting whole numbers. Examples: 8+2 -8+2 8-2 -8-2


Why subtracting a negative number is equivalent to adding a positive number?

equivalent to subtracting a negative


Is it always true that two negatives make a positive?

Adding two negative numbers will always be negative. Subtracting two negative numbers may be positive or negative. Dividing or multiplying two negative numbers will always be positive.No


What is the answer to 6-⁴?

+


What is similar to subtracting a positive integer from a negative integer?

adding a negative


When Subtracting a positive integer from a negative integer is similar to what?

adding a negative


What are the rules when adding or subtracting negative numbers?

When subtracting negative numbers change the subtraction sign to a plus and change the second number (which would appear to be positive) to a negative. ex. -14 - 7=?/-14 + -7= -21 When adding negative numbers just add them as they appear. ex. -2 + -5= -7