Math and Arithmetic

# How do you add and subtract integers?

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first we used the rule KCC keep the first number ,change the sign and second number.Rules for addition of singed number :

Same signs Add and keep the sign;different signs Subtract and keep the sign of the biggest number

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## Related Questions It is important to add and subtract integers: to get a new integer value in mathematics . you can add subtract multiply and divide them. Because otherwise you would only know how to subtract and add with the same integers. Not a particularly useful skill unless just those integers turned up!  When adding negative integers, you subtract. (2+-1=1) When subtracting negative integers, you add. (2--3=5) When you add, subtract, or multiply integers, you get integers. When you divide one integer by another one, you may or may not get an integer.     You arrive at a resultant, the resultant depends on the operation carried out. Adding two numbers with different signs means subtracting the two absolute integers (without sign) and vice versa.  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. First, subtract the absolute values of the integers, then use the greater absolute value's sign. You subtract the smaller from the larger and give the answer the sign of the number with the larger absolute value. I feel that two negatives are positive because you add* your two negative integers* together, you would be doing this: -+- (negative + negative) so the response is, is that if two integers where both negative, you would add, just like if there were two positives, you would add, but not if you have different signs. (positive+negative) you would subtract. Just as the same with negative + positive. [REVIEW: if the sign is the same, add, if the sign is different, you subtract.] *=you may not always add *=integers- a fancy word for numbers.  Add the numerals and keep the sign. Examples: +9 + +3 = +12 -5 + -6 = -11 Just in case this is your next question: to add integers with different signs, subtract the numerals, and use the sign of the larger number. To subtract integers u use kcc aka keep change change on the sighn and then u subtract normaly. You write down the numbers you want to add and subtract, making sure the decimal points are aligned. Then, you add (or subtract) EXACTLY as you would add or subtract integers. The decimal point in the solution should be aligned with the decimal points in the original numbers. diffrence will always be positive except when it is zero but is you speak of substraction operation it can be positive negative or zero -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   