do you mean positive and negative?
05-21-2008, 08:32 AM

I teach my 6th graders this way:

First you have to make the problem an addition problem by changing the minus to a plus and changing the sign of the last number. For example, 5-6 now becomes 5+ -6. THEN,

If the signs are Different, find the DIFFERENCE between the two numbers.
If the signs are the Same, find the SUM of the two numbers.
Pick the sign of the larger number for your answer.