Millimeter (abbreviation: mm): is a unit of length in the SI metric system, equal to one thousandth of a metre. Therefore, there are thousand millimetres in a metre and ten millimetres in a centimetre.
Centimeter (abbreviation: cm): is a unit of length in the SI metric system, equal to one hundredth of a metre, centi being the prefix for a factor of 1/100. The centimetre was the base unit of length in the now deprecated centimetre–gram–second (CGS) system of units.
How to Convert Millimeters to Centimeters
Example: How many centimeters are equivalent to 61.72 millimeters?
As;
1 millimeters = 0.1 centimeters
61.72 millimeters = Y centimeters
Assuming Y is the answer, and by criss-cross principle;
Y equals 61.72 times 0.1 over 1
(i.e.) Y = 61.72 * 0.1 / 1 = 6.172 centimeters
Answer is: 6.172 centimeters are equivalent to 61.72 millimeters.
Practice Question: Convert the following units into cm:
N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.
( i ) 24.33 mm
( ii ) 36.17 mm
( iii ) 57.62 mm
