To calculate the difference between **28 minutes 9 seconds** and **27 minutes 16 seconds**:

1. Subtract the seconds:  
   \( 9 \, \text{seconds} - 16 \, \text{seconds} = -7 \, \text{seconds} \).

Since we can't have negative seconds, borrow 1 minute (which is 60 seconds) from 28 minutes. Now, the new time becomes **27 minutes 69 seconds**.

2. Subtract the seconds again:  
   \( 69 \, \text{seconds} - 16 \, \text{seconds} = 53 \, \text{seconds} \).

3. Subtract the minutes:  
   \( 27 \, \text{minutes} - 27 \, \text{minutes} = 0 \, \text{minutes} \).

So, the final result is **0 minutes 53 seconds**.

### Final Answer:  
\( \text{53 seconds} \).

Would you like more details or have any questions about the solution?

Here are 5 related questions for further practice:
1. What is the difference between 45 minutes 30 seconds and 42 minutes 45 seconds?
2. Add 15 minutes 20 seconds to 25 minutes 50 seconds.
3. Convert 28 minutes 9 seconds into total seconds.
4. If 10 minutes 45 seconds pass, how many seconds are left in an hour?
5. Subtract 7 minutes 58 seconds from 10 minutes 15 seconds.

**Tip:** When subtracting times, always check if you need to borrow from the minutes if the seconds result in a negative value.

Learn how to subtract times with borrowing, as shown in the step-by-step solution for calculating the difference between 28 minutes 9 seconds and 27 minutes 16 seconds. This problem involves basic time arithmetic and subtraction skills, suitable for students in Grades 4-6.

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