Answer :
The missing operations and numbers for the given math problems are: 9 + 6 = 15, 19 + 1 = 20, and 16 - 2 = 14.
The student is dealing with basic arithmetic operations and understanding the order of operations. To solve the student's questions, we need to determine the correct arithmetic operation and perform simple calculations.
- For 9 ? = 15, we are looking for a number that when added to 9, equals 15. By subtraction, we find that 9 + 6 = 15.
- In 19 ? = 20, we need a number that when added to 19, gives us 20. Thus, 19 + 1 = 20.
- For 16 - 2 = ?, we perform the subtraction: 16 - 2 = 14.
