Place value tells us what a digit is worth based on its position in a number. The same digit can represent very different amounts depending on where it sits.
1-C 2-B 3-A 4-A | 5 place 6 face 7 = 9000 (thousands) 8 = 40 (tens) 9 = 3000 + 400 + 5 | 10 = 6