Grade 4 worksheet on choosing correct units of length (inches, feet, yards, miles).

Let's solve the worksheet step by step. The task is to select the appropriate unit of measurement (inches, feet, yards, or miles) for each given object or distance.

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1. Length of a bathtub

- a. inches
- b. feet
- c. yards
- d. miles

✔ Correct answer: b. feet
A typical bathtub is about 5–6 feet long. Inches would be too small, yards are larger than needed, and miles are way too big.

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2. Distance between two cities

- a. inches
- b. feet
- c. yards
- d. miles

✔ Correct answer: d. miles
Cities are usually many miles apart. Inches, feet, and yards are far too small for such distances.

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3. Height of a man

- a. inches
- b. feet
- c. yards
- d. miles

✔ Correct answer: b. feet
An average man is about 5 to 6 feet tall. While height can also be measured in inches (e.g., 72 inches = 6 feet), feet is the more common and appropriate unit here.

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4. Length of a running track

- a. inches
- b. feet
- c. yards
- d. miles

✔ Correct answer: c. yards
A standard running track is 400 meters long, which is approximately 437 yards. While feet could work, yards are commonly used in track and field measurements (especially in the U.S.). Miles are too large (1 mile = 1,760 yards).

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5. Length of ruler

- a. inches
- b. feet
- c. yards
- d. miles

✔ Correct answer: a. inches
A typical ruler is 12 inches long. That’s the standard size, so inches is the most appropriate unit.

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6. Length of measuring tape

- a. inches
- b. feet
- c. yards
- d. miles

✔ Correct answer: c. yards
Measuring tapes come in various lengths, but common ones are 10, 25, or 50 feet — which is roughly 3.3 to 16.7 yards. However, since yards are often used for longer measurements (like in construction or sewing), and the options don’t include "feet" as a better choice (though it might be acceptable), yards is typically the best choice among the options when referring to measuring tape length.

But wait — let's reconsider:
Many measuring tapes are labeled in feet, especially in the U.S. So if the question refers to how long the tape is, like a 25-foot tape, then feet is correct.

However, the option c. yards is listed, and 25 feet ≈ 8.3 yards — not a round number. But feet is more precise and commonly used.

Wait — let's check the choices again:

- a. inches → too small
- b. feet → possible
- c. yards → possible
- d. miles → too big

✔ Best answer: b. feet
Because measuring tapes are commonly sold in lengths like 10 feet, 25 feet, etc. So feet is the most appropriate unit.

> Correction: Answer should be b. feet

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7. Wall of a person

Wait — this seems like a typo. It says:
> 7. Wall of a person

That doesn't make sense. Probably meant to be:
> Width of a person or Height of a person

But the image shows:
> Wall of a person — likely a typo.

Looking at the context, perhaps it's meant to be Width of a person?

But even that is odd. Alternatively, maybe it's "Wrist of a person"? No.

Wait — looking at the original image description, it says:
> 7. Wall of a person

This appears to be a mistake. Possibly meant to be "Width of a person" or "Height of a person" — but #3 already covers height.

Alternatively, it might be "Length of a person" — same as height.

But let's assume it's a typo and intended to be "Width of a person" — meaning how wide someone is from side to side.

Then:

✔ Answer: a. inches
The width of a person across the shoulders is about 18–20 inches. So inches is the best unit.

Alternatively, if it's "Height of a person", then feet (as in #3).

But since #3 already has "height", and #7 says "wall", which is confusing...

Wait — perhaps it's "Wall of a room"? But it says "of a person".

Given the ambiguity, but based on the options and logic:

If we interpret “wall of a person” as a typo for “width of a person”, then:

✔ Answer: a. inches

Or if it's “length of a person”, then b. feet — but that’s redundant with #3.

Alternatively, maybe it's “wall of a room” — then:

- A wall is several feet long → feet or yards

But again, it says "wall of a person", which is nonsensical.

So likely a typo.

But in the image, it's clearly written as "Wall of a person" — probably meant to be "Width of a person".

Thus, best answer: a. inches

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✔ Final Answers:

| Question | Answer | Explanation |
|--------|--------|-----------|
| 1. Length of a bathtub | b. feet | Bathtubs are ~5–6 ft long |
| 2. Distance between two cities | d. miles | Cities are miles apart |
| 3. Height of a man | b. feet | Average man is 5–6 ft tall |
| 4. Length of a running track | c. yards | Standard track is ~437 yards |
| 5. Length of ruler | a. inches | Ruler is 12 inches long |
| 6. Length of measuring tape | b. feet | Tapes are 10, 25, 50 ft long |
| 7. Wall of a person | a. inches | Likely typo; assuming "width"; ~18–20 inches |

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🟩 Correct Answers:

1. b
2. d
3. b
4. c
5. a
6. b
7. a *(assuming "width" instead of "wall")*

> Note: Question 7 is likely a typo. If you have clarification, it can be adjusted.