1. Adding Integers

2. Addition of Integers:

3. Addition of Integers:

4. Now.…there is one more thing we need to know.
Remembering AIS and SID can help us with this next stage.
A I S
and
S I D

5. AIS = Add If Same
Look at the signs in the middle, if they are the same, then replace them with +. + = 14

6. AIS = Add If Same +
= 3

7. SID = Subtract If Different
Look at the signs in the middle, if they are different, then replace them with -. - = 2

8. SID = Subtract If Different-
= -10

9. -6 + -2 = -6 - -8 = -8 2 But what about this one? - +
Can you use all your knowledge of
negative numbers so far to find the
answer to these calculations? - = = -8 2 +
Remember: This is your start number and the new sign in the middle is the direction

10. Homework: