The place value of a digit in a number depends on its position. Here are a few examples demonstrating the place value of the digit 8 in different numbers:

1. In the number 85:

   • The digit 8 is in the tens place.
   • Therefore, its place value is $8 \times 10 = 80$.

2. In the number 384:

   • The digit 8 is in the tens place.
   • Therefore, its place value is $8 \times 10 = 80$.

3. In the number 2,830:

   • The digit 8 is in the hundreds place.
   • Therefore, its place value is $8 \times 100 = 800$.

4. In the number 57,689:

   • The digit 8 is in the tens place.
   • Therefore, its place value is $8 \times 10 = 80$.

5. In the number 486:

   • The digit 8 is in the units place.
   • Therefore, its place value is $8 \times 1 = 8$.

The place value of a digit is always calculated by multiplying the digit by the value of its position (units, tens, hundreds, thousands, etc.).

Would you like any details or have any questions about this?

Here are 8 relative questions to further expand your understanding:

1. What is the place value of 3 in the number 3456?
2. How do you determine the place value of a digit in a large number?
3. What is the place value of 5 in the number 5,478?
4. What is the difference between face value and place value?
5. What is the place value of 9 in the number 9,876?
6. How does place value change when a digit is moved one position to the left?
7. Can you explain the place value system in decimals, such as in 8.35?
8. What is the place value of 7 in the number 27,851?

Tip: Understanding place value is crucial in performing arithmetic operations and understanding the significance of each digit in a number.