Millimeter is smallest.
Millimeter is the smallest unit among centimeter, kilometer, millimeter, and meter.
Millimeters. There are 10 millimeters in 1 centimeter and 1000 in a meter. From smallest to biggest it goes: millimeter, centimeter, decameter, meter, kilometer.
millimeter
Millimeter is the smallest measurement.
Millimeter, centimeter, meter, kilometer.
Millimeter centimeter meter kilometer is the right order
Millimeter, Centimeter, Decimeter, Meter, Decameter, Hectometer, Kilometer
kilometer = 1000 meters decameter = 10 meters meter = 1/1000th kilometer ... approx 39.9 inches, just over a yard. decimeter = 1/10th meter centimeter = 1/100th meter millimeter = 1/1000th meter micrometer = 1/1000th millimeter - and - micrometer = 1/1,000,000 meter - one millionth of a meter. These are listed in size from largest to smallest. You did not ask about Meter, Decameter or Meter. By the way, in England it is called a Metre, not a Meter.
From smallest to largest:MillimeterCentimeterMeterKilometer
1,000,000 millimeters (smallest) = 100,000 centimeters = 10,000 decimeters = 1,000 meters = 1 kilometer Largest)
Kilometre, metre, centimetre, millimetre.
Millimetre, centimetre, metre, kilometre.