Exactly the same way you multiply inches by inches, or miles by miles.
Do I need to go through the details ? OK: Multiply the numbers, and
give the product the unit of mm2 (square millimeters). That's an area.
To convert centimeters to millimeters, you need to multiply by 10 since there are 10 millimeters in 1 centimeter. Therefore, if the thermometer is 25 cm long, you would multiply 25 by 10 to get the length in millimeters. The length of the thermometer in millimeters would be 250 mm.
There are 10 millimeters in one centimeter, you multiply 50 X 10 = 500 millimeters.
Multiply Km by 10^6
To convert centimeters to millimeters, you multiply by 10, as there are 10 millimeters in 1 centimeter. Therefore, to convert 62.5 cm to mm, you would multiply 62.5 by 10, giving you 625 mm.
Multiply by 1000. So, 0.000061 m = 0.061 mm.
Multiply by 1000 15,000 millimeters.
To convert centimeters to millimeters, multiply the number of centimeters by 10. This is because there are 10 millimeters in one centimeter.
Multiply the length in inches by 25.4 to get millimeters.
inches to millimeters, multiply inches by 25.4. You do the math.
Multiply by 2540 to convert inches to millimeters
There are 10 millimeters to every 1 centimeter. So, there would be more millimeters in a given length than centimeters. To increase a number you would multiply.
To convert centimeters to millimeters, you multiply the number of centimeters by 10. For example, if you have 5 cm, you would multiply 5 by 10 to get 50 mm.
Multiply by 1000.
Multiply by 1,000
multiply by 1000
1 centimeter = 10 millimeters Multiply (centimeters) by 10 to get the same length in (millimeters).
Multiply by 25.4