Let's go over the place values for the bolded digits in the numbers you provided.

1. a. 1 345.87

   • The bolded digit is 3.
   • Its place value is hundreds because it is in the hundreds position.

2. b. 6 234 863.52

   • The bolded digit is 4.
   • Its place value is thousands because it is in the thousands position.

3. c. 25 872.269

   • The bolded digit is 9.
   • Its place value is thousandths because it is in the third decimal place (0.009).

4. d. 73.1296

   • The bolded digit is 1.
   • Its place value is tens because it is in the tens position.

5. e. 39.673

   • The bolded digit is 3.
   • Its place value is thousandths because it is in the third decimal place (0.003).

6. f. 1 835 643.4286

   • The bolded digit is 8.
   • Its place value is hundred-thousandths because it is in the fifth decimal place (0.00008).

Would you like further clarification on any of these place values?

Here are five related questions for practice:

1. What is the place value of the bolded digit in 45,672?
2. If the bolded digit is in the hundredths place, what would it represent?
3. Find the place value of the digit 7 in 8,760.23.
4. What is the value of the bolded digit in 53,901.45?
5. Explain the place value of each digit in the number 3,408.592.

Tip: Remember that as you move left of the decimal point, the place values increase by powers of 10 (ones, tens, hundreds, etc.), and as you move right, they decrease by powers of 10 (tenths, hundredths, thousandths, etc.).