how many small spaces are marked off within 1 centimeter

Question

i know 10mm= 1 cm but when i literally count the small spaces, there are nine of them

Answer 1

I count 10 spaces between 0 and 1 cm.

Answer 2

the small spaces which represent millimeters count 9 spaces. i'm not talking about the spaces which represent centimeters

Answer 3

http://thehomeschoolzone.com/FREEBasics/centimeters%2004.png