Math Class 6 : Basic addition and subtraction with integers

1. The sum of two integers is -10. If one of them is 12, then the other is
   (a) -22
   (b) -2
   (c) -18
   (d) 22
2. The sum of two integers is 8. If one of them is -3, then the other is
   (a) 11
   (b) -11
   (c) 5
   (d) -5
3. The sum of two integers is -20. If one of them is -7, then the other is
   (a) -13
   (b) 13
   (c) -27
   (d) 27
4. The sum of two integers is 15. If one of them is 9, then the other is
   (a) 6
   (b) -6
   (c) 24
   (d) -24
5. The sum of two integers is -5. If one of them is -12, then the other is
   (a) 7
   (b) -7
   (c) 17
   (d) -17

These problems involve basic addition and subtraction with integers, requiring the student to find the missing number given the sum and one of the integers.