Units of Length

Metric system: units of distance

Source: Khan Academy, https://www.khanacademy.org/math/cc-fourth-grade-math/imp-measurement-and-data-2
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U.S. customary units: distance

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

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

1. 5 meters is the closest to the height of a giraffe.

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

3. The most reasonable distance for a student to travel from their house to their school is 1 kilometer.

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

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

6. The width of a strawberry is about 20 millimeters.

7.  The length of a wrist watch is about 20 centimeters.

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

(C) 5 yards

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

Choose 1 answer:

(A) Feet

(B) Yards

(C) Miles

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

Choose 1 answer:

(A) 2 feet

(B) 2 yards

(C) 2 miles

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

Choose 1 answer:

(A) Feet

(B) Yards

(C) Miles

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

Choose 1 answer:

(A) Inches

(B) Yards

(C) Miles

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

Choose 1 answer:

(A) 10 inches

(B) 10 feet

(C) 10 yards

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

Choose 1 answer:

(A) 30 inches

(B) 30 feet

(C) 30 miles

Estimating length (in, ft, yd, and mi) - Answers

1. The height of a giraffe is about 5 yards.

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

3. The distance traveled on an hour long hike is about 2 miles.

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

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

6. The length of a notebook is about 10 inches.

7.  The length of an Orca whale is about 30 feet.