The decomposition of 8,709 as "7 thousands + 17 hundreds + 9 ones" is incorrect. Here's why:

• 7 thousands is equal to 7,000.
• 17 hundreds is equal to 1,700 (since 17 × 100 = 1,700).
• 9 ones is equal to 9.

If you add these values together:

$7,000 + 1,700 + 9 = 8,709$

So, the original statement is correct in terms of the values adding up to 8,709. However, a more conventional way to decompose 8,709 would be:

• 8 thousands (8,000)
• 7 hundreds (700)
• 0 tens (0)
• 9 ones (9)

Would you like more details or have any questions?

Here are some related questions you might find interesting:

1. How do you decompose a number like 12,345 into its place values?
2. What is the expanded form of the number 4,572?
3. How do you decompose decimal numbers?
4. How do you represent 8,709 using powers of 10?
5. How can you write the number 8,709 as a sum of prime numbers?

Tip: When decomposing numbers, ensure that the sum of the parts matches the original number.