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 (in, ft, yd, and mi) - Questions

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

Choose 1 answer:

(A) 5 inches

(B) 5 feet

2. Identify the most reasonable unit to measure the height of an adult.

Choose 1 answer:

(A) Feet

(B) Yards

3. Which is the closest to the distance traveled on an hour long hike?

Choose 1 answer:

(A) 2 feet

(B) 2 yards

4. Identify the most reasonable unit to measure the distance of an airline flight.

Choose 1 answer:

(A) Feet

(B) Yards

5. Identify the most reasonable unit to measure the length of an Olympic size swimming pool.

Choose 1 answer:

(A) Inches

(B) Yards

6. Which is the closest to the length of a notebook?

Choose 1 answer:

(A) 10 inches

(B) 10 feet

7. Which is closest to the length of an Orca whale?

Choose 1 answer:

(A) 30 inches

(B) 30 feet