# Worksheet: Estimating Length: Metric Units

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.

**Q2: **

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

- A200 m
- B1 m
- C100 m
- D3 m

**Q3: **

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

- A25 cm
- B60 cm
- C2 m
- D1 m
- E4 m

**Q4: **

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

- A6 cm
- B60 cm
- C70 cm
- D100 cm
- E50 cm

**Q5: **

Estimate, in centimetres, the most likely length of a rubber.

- A4 cm
- B60 cm
- C40 cm
- D80 cm
- E20 cm

**Q6: **

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

- A10 cm
- B50 cm
- C2 m
- D3 m
- E1 m

**Q7: **

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

- A2 m
- B70 cm
- C12 cm
- D12 mm
- E5 dm

**Q8: **

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

- A80 cm
- B9 cm
- C7 mm
- D2 m
- E30 dm

**Q9: **

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

- A4 mm
- B28 cm
- C8 dm
- D7 m
- E90 cm

**Q11: **

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

- A44 km
- B 2,000 cm
- C84 m

**Q12: **

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

- A10 m
- B10 cm
- C3 m
- D3 cm

**Q13: **

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

- A50 cm
- B1 cm
- C8 cm
- D90 cm

**Q14: **

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

- A6 cm
- B90 cm
- C34 cm
- D2 cm
- E1 cm

**Q15: **

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

- A5 cm
- B2 cm
- C60 cm
- D70 cm
- E25 cm

**Q17: **

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?

- Ato the nearest millimeter
- Bto the nearest micrometer

**Q18: **

William estimates the height of a mountain to be 1,400 cm. Is this realistic?

- ANo
- BYes

**Q19: **

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

- A50 cm
- B1 m
- C5 m
- D6 cm
- E2 m

**Q20: **

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

- A10 m
- B300 m
- C300 cm
- D10 cm

**Q21: **

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

- A160 cm
- B10 m
- C160 m
- D40 cm

**Q22: **

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?

- Ato the nearest millimeter
- Bto the nearest centimeter

**Q23: **

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

- A20 cm
- B3 m
- C1 m
- D70 cm
- E2 m

**Q24: **

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

- A120 cm
- B12 yd
- C12 m
- D2 km
- E120 ft

**Q25: **

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

- A1 cm
- B7 cm
- C1 m
- D7 m