**Definitions:**

**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 9.23 millimeters?*

As;

1 millimeters = 0.1 centimeters

9.23 millimeters = Y centimeters

Assuming Y is the answer, and by criss-cross principle;

Y equals 9.23 times 0.1 over 1

(i.e.) Y = 9.23 * 0.1 / 1 = 0.923 centimeters

Answer is: 0.923 centimeters are equivalent to 9.23 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 ) 62.89 mm

( ii ) 7.03 mm

( iii ) 23.68 mm