# Worksheet: Estimating Metric Units of Length

In this worksheet, we will practice estimating the length of different real-life objects by choosing the most logical unit of length and value in metric units.

**Q3: **

Which measurement below is closest to the length of a car?

- A 200 m
- B 3 m
- C 100 m
- D 1 m

**Q4: **

Which of the following is a reasonable length for a tennis racket?

- A 25 cm
- B 60 cm
- C 1 m
- D 2 m
- E 4 m

**Q5: **

How long is the shown object in reality? Choose the answer that gives the best estimation.

- A 6 cm
- B 100 cm
- C 50 cm
- D 70 cm
- E 60 cm

**Q6: **

Estimate, in centimeters, the most likely length of an eraser.

- A 40 cm
- B 60 cm
- C 80 cm
- D 20 cm
- E 4 cm

**Q7: **

Which of the following is a reasonable length for a spoon?

- A 10 cm
- B 50 cm
- C 2 m
- D 1 m
- E 3 m

**Q8: **

Which of the following is a reasonable length for a toothbrush?

- A 5 dm
- B 2 m
- C 12 cm
- D 12 mm
- E 70 cm

**Q9: **

Which of the following is the best approximation for the length of an adult’s leg?

- A 9 cm
- B 30 dm
- C 2 m
- D 80 cm
- E 7 mm

**Q10: **

Which of the following would be the best estimate for the length of an adult’s shoe?

- A 4 mm
- B 28 cm
- C 90 cm
- D 8 dm
- E 7 m

**Q11: **

Estimate the answer in centimetres and complete the following statement: The length of your bed is .

- A 5 cm
- B 7 cm
- C 20 cm
- D 200 cm
- E 30 cm

**Q12: **

Which of these is most likely to be the distance between two cities?

- A 84 m
- B cm
- C 44 km

**Q13: **

Which of these is most likely to be the length of a car?

- A 3 cm
- B 10 cm
- C 3 m
- D 10 m

**Q14: **

Which measurement below is closest to the length of a pencil?

- A 1 cm
- B 90 cm
- C 8 cm
- D 50 cm

**Q15: **

Which of the following would be the best estimate for the length of an adult's little finger?

- A 34 cm
- B 2 cm
- C 90 cm
- D 6 cm
- E 1 cm

**Q16: **

Which of the following would be the best approximation for the length of the longest side of a math book?

- A 5 cm
- B 2 cm
- C 70 cm
- D 25 cm
- E 60 cm

**Q17: **

What is the approximate height of the Cairo Tower?

- A 200 m
- B 2 cm
- C 200 cm
- D 2 m

**Q18: **

Charlotte wants to measure the length of a plant cell. She has a microscope and a stage micrometer. Would she be more accurate measuring the length to the nearest millimeter or micrometer?

- A to the nearest micrometer
- B to the nearest millimeter

**Q19: **

William estimates the height of a mountain to be cm. Is this realistic?

- ANo
- BYes

**Q20: **

Which of the following is a reasonable length for a door key?

- A 50 cm
- B 5 m
- C 6 cm
- D 1 m
- E 2 m

**Q21: **

Which of these is most likely to be the height of a classroom?

- A 10 m
- B 300 m
- C 10 cm
- D 300 cm

**Q22: **

Which of these is most likely to be the height of a teacher?

- A 10 m
- B 40 cm
- C 160 m
- D 160 cm

**Q23: **

Anthony wants to cut out a hole in a piece of wood through which he will be able to place a beam of wood whose face is a rectangle. To determine the size of the hole that he needs to cut, would it be better to measure the beam’s dimensions to the nearest centimeter or nearest millimeter?

- A to the nearest centimeter
- B to the nearest millimeter

**Q24: **

How long is the shown object in reality? Choose the answer that gives the best estimation.

- A 3 m
- B 20 cm
- C 70 cm
- D 2 m
- E 1 m

**Q25: **

How long is the shown object in reality? Choose the answer that gives the best estimation.

- A 120 cm
- B 12 yd
- C 12 m
- D 120 ft
- E 2 km