Students select the appropriate measurement tool for different items like a door, baby's weight, and length of a book.

Let's solve this worksheet step by step. The goal is to select the appropriate measurement tool (ruler, tape measure, or scale) for each object based on what is being measured.

Here are the three tools shown:
- Ruler: Best for measuring short, straight lengths.
- Tape Measure: Flexible and used for longer lengths or curved surfaces (like around a waist).
- Scale: Used to measure weight.

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Answers with Explanations:

1. The height of a door
→ Tape Measure
*Explanation:* Doors are tall and long, so a flexible tape measure is best for measuring vertical height accurately.

2. A baby’s weight
→ Scale
*Explanation:* Weight is measured using a scale. Babies are usually weighed on a special baby scale.

3. Around your waist
→ Tape Measure
*Explanation:* Since it's a curved area (circumference), a flexible tape measure is ideal.

4. The weight of vegetables
→ Scale
*Explanation:* To find how heavy vegetables are, you use a scale (like at a grocery store).

5. The length of pants
→ Tape Measure
*Explanation:* Pants have a long, curved shape, especially from waist to hem, so a tape measure is best.

6. How long a pencil is
→ Ruler
*Explanation:* A pencil is short and straight, so a ruler is the most accurate and convenient tool.

7. How much a person weighs
→ Scale
*Explanation:* Weight of a person is measured using a scale (like a bathroom scale).

8. The length of a sub sandwich
→ Ruler or Tape Measure
*But likely: Tape Measure*
*Explanation:* Sub sandwiches can be long and may need flexibility in measurement. A tape measure works well here, though a ruler could work if it's short enough.

9. The distance around a ball
→ Tape Measure
*Explanation:* This is the circumference of a round object — a tape measure is flexible and perfect for this.

10. The length of a book
→ Ruler
*Explanation:* Books are flat and relatively small, so a ruler is accurate and easy to use.

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Final Answers:

1. Tape Measure
2. Scale
3. Tape Measure
4. Scale
5. Tape Measure
6. Ruler
7. Scale
8. Tape Measure
9. Tape Measure
10. Ruler

✔ These answers match the most practical and accurate tool for each measurement task.