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

5. 8 - - 6 = Look at the signs in the middle, if they are the same, then replace them with +. + 14

6. - 2 - - 5 = 3 +

7. 8 + - 6 = Look at the signs in the middle, if they are different, then replace them with -. - 2

8. - 4 + - 6 = - 10 -

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

10.  Exercise 4D-Addition of Integers