Units of Length

This lecture series introduces the units of length (or distance) in the metric and U.S. customary systems. Watch the videos and complete the interactive exercises.

Practice

Estimating length (mm, cm, m, km) - Questions

1. Which is the closest to the height of a giraffe?

Choose 1 answer:

(A) 5 centimeters

(B) 5 meters

(C) 5 kilometers



2. Identify the most reasonable unit to measure the height of a coffee cup.

Choose 1 answer:

(A) Centimeters

(B) Meters

(C) Kilometers

3. Which is the most reasonable distance for a student to travel from their house to their school?

Choose 1 answer:

(A) 1 centimeter

(B) 1 meter

(C) 1 kilometer

4. Identify the most reasonable unit to measure the distance from China to Japan.

Choose 1 answer:

(A) Centimeters

(B) Meters

(C) Kilometers

5. Identify the most reasonable unit to measure the length of a school bus.

Choose 1 answer:

(A) Millimeters

(B) Meters

(C) Kilometers

6. Which is the closest to the width of a strawberry?

Choose 1 answer:

(A) 20 millimeters

(B) 20 meters

(C) 20 kilometers



7.  Which is the closest to the length of a wrist watch?

Choose 1 answer:

(A) 20 millimeters

(B) 20 centimeters

(c) 20 meters