how many small spaces are marked off within 1 centimeter
i know 10mm= 1 cm but when i literally count the small spaces, there are nine of them
I count 10 spaces between 0 and 1 cm.
the small spaces which represent millimeters count 9 spaces. i'm not talking about the spaces which represent centimeters
http://thehomeschoolzone.com/FREEBasics/centimeters%2004.png
To determine the number of small spaces or subdivisions within 1 centimeter, we need to consider the measuring instrument being used.
In general, rulers and tape measures typically have subdivisions called millimeters (mm) marked off within each centimeter. There are usually 10 millimeters in 1 centimeter. However, the smallest division or marking on the ruler is not always the same as a millimeter.
Considering your observation that there are nine small spaces within 1 centimeter, it is possible that the ruler or measuring instrument you are using has its smallest division that is slightly larger than a millimeter. In such a case, it is not unusual to encounter markings that may not align exactly with the standard millimeter scale.
To have a more accurate measurement, you can try to estimate the in-between positions by visually dividing each centimeter into 10 equal parts as best as you can. Keep in mind that this estimation may introduce some degree of error, but it will provide a closer approximation of the number of small spaces within 1 centimeter using your specific measuring tool.