Which abbreviation stands for a unit used to measure small lengths?

Which abbreviation stands for a unit used to measure small lengths?

• A. cm
• B. mm
• C. m
• D. km

Answer: (B)

When you’re measuring very small lengths, you use the millimeter. A millimeter is one thousandth of a meter, which makes it small enough to measure tiny objects like the thickness of a coin or a strand of hair. In the metric system, 1 centimeter equals 10 millimeters, and 1 meter equals 1000 millimeters. That means millimeters are the go-to unit for precision on small scales, while centimeters are a step up, and meters or kilometers cover much larger distances. So the abbreviation for the unit used to measure small lengths is mm, short for millimeter.

When you’re measuring very small lengths, you use the millimeter. A millimeter is one thousandth of a meter, which makes it small enough to measure tiny objects like the thickness of a coin or a strand of hair. In the metric system, 1 centimeter equals 10 millimeters, and 1 meter equals 1000 millimeters. That means millimeters are the go-to unit for precision on small scales, while centimeters are a step up, and meters or kilometers cover much larger distances. So the abbreviation for the unit used to measure small lengths is mm, short for millimeter.