how do u make mm into cm

Divide by 10.

10 mm = 1 cm
50 mm = 5 cm

50mm=5cm

10=1

You have a nail not a finger nail but a nail what is the nearest cm and the nearest mm

To convert millimeters (mm) to centimeters (cm), you can divide the measurement in millimeters by 10. Since there are 10 millimeters in 1 centimeter, dividing by 10 effectively converts the measurement from millimeters to centimeters.

Here's an example:
Let's say you want to convert 50 millimeters to centimeters.
Divide 50 by 10: 50 / 10 = 5.
Therefore, 50 millimeters is equal to 5 centimeters.

To summarize:
To convert millimeters to centimeters, divide the measurement in millimeters by 10.