Answer:
1. -38
2. -25
3. 10
4. -4
5. 0
6. -34
7. 9
8. -7
9. -4
Explanation:
1. -22+(-16): All is needed to be done is adding it like normally but jsut by putting a negative sign in the front: -38
2. Same idea just add
3. Regular addition
4. This one is just positive 21 + (-21)= 0 with -4 left over
5. Add -17 and -3 together for -20 then add the positive 20 to get zero
6. Add positive 25 and negitve 25. You have -34 left over.
7. Add 5+4 to get 9
8. Since -15 is bigger then 8 it becomes negative
9. -11 is bigger so subtract 7 to get 4 but it becomes negative