Subtracting Negative Numbers:
- subtracting is like adding the opposite of the number.
Rule 1: Subtracting a positive number from a positive number—this is normal subtraction.
Rule 2: Subtracting a positive number from a negative number—start at the negative number, and count backward the additional amount you’re subtracting.

Rule 3: Subtracting a negative number from a negative number—when you see the subtraction (minus) sign followed by a negative sign, turn the two signs into a plus sign. Thus, instead of subtracting a negative, you are adding a positive. So, – -5 becomes +5, and continue normally with the addition.

 ex -5-3= -8

No sign **** usually means is positive 

Let us think 

If we have balloons and we add positive numbers. We will have more ballons. 

If we subtract positive numbers we are going backward. Therefore you losing ballons.

If we add a negative number. we are adding more weight to go down 

Never Forget 

-Two like signs become a positive 

-two, unlike signs, become a negative

I love this assignment because I could see how kids may get confused. I think that by being able to follow a diagram or a visual image as a explain lets them get better and more practical at this challenge. 

The End