Estimating Length Worksheet
A Grade 4 math worksheet focused on estimating lengths of various objects using appropriate units.
Includes
Standards
Topics
Estimating Length
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Date:
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Read each question carefully and estimate the length of the objects. Choose the best unit of measurement and then the best estimate.
1. Which unit would be best to measure the length of a pencil?
kilometers
meters
centimeters
millimeters
2. What is the best estimate for the length of a school bus?
10 centimeters
10 meters
10 kilometers
100 millimeters
3. The length of a stapler is best estimated in (centimeters/meters).
4. A good estimate for the length of a swimming pool is 25 (centimeters/meters).
5. Look at the ruler below. If you want to measure an eraser, would you use centimeters or inches? Explain why.

6. A person's height is usually measured in millimeters.
True
False
7. The distance from your home to school can be estimated in kilometers.
True
False
Match the object with the most appropriate estimated length.
8. Length of a crayon
a. 5 meters
9. Length of a car
b. 10 centimeters
10. Length of a fingernail
c. 1 centimeter