Make sure that you explain how to determine the sum's sign.
-
Add them and take the sign that they share.
-
Jesse's lack of understanding for math has deflected towards you. Just ignore that comment.
If both numbers are positive, add them normally.
I'm sure you want to know if they are both negative. If they are both negative you add still, only it appears as if you subtract the absolute value of one of the integers
If x and y are both negative, then x+y = x-|y|
So -4+(-6) = -4-|-6| = -4-6=-10
If both numbers are positive, add them normally.
I'm sure you want to know if they are both negative. If they are both negative you add still, only it appears as if you subtract the absolute value of one of the integers
If x and y are both negative, then x+y = x-|y|
So -4+(-6) = -4-|-6| = -4-6=-10
-
adding two integers with the same signs. ok, so lets look at in variable form. A and B
1st case: A is positive and B is positive.
both are positive, so the sum is positive A+B
2nd case A is positive and B is negative.
A+(-B) is the same as A-B. If B is "larger", then the sign will be negative. If A is larger, then the sign will be positive.
3rd case. A is negative and B is negative.
(-A)+(-B). the sign will be negative because both signs are negative. Add the numbers and place a negative sign in front of the sum.
4th case A is negative and B is positive
(-A)+B is the same as B-A. If A is "larger", then the sign will be negative. If A is larger, then the sign will be positive.
Hope this cleared up any questions!
1st case: A is positive and B is positive.
both are positive, so the sum is positive A+B
2nd case A is positive and B is negative.
A+(-B) is the same as A-B. If B is "larger", then the sign will be negative. If A is larger, then the sign will be positive.
3rd case. A is negative and B is negative.
(-A)+(-B). the sign will be negative because both signs are negative. Add the numbers and place a negative sign in front of the sum.
4th case A is negative and B is positive
(-A)+B is the same as B-A. If A is "larger", then the sign will be negative. If A is larger, then the sign will be positive.
Hope this cleared up any questions!
-
How old are you?? Are you like stupid or something? Seriously, how do you add two integers of the same sign? So whats 2 + 2? Can you do that? Because those both have the same sign. Can you determine that sums sign?