Let's solve the
"Measuring Length" worksheet step by step and explain how to read each measurement accurately.
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🔍 Understanding the Ruler
- The metric ruler is marked in
centimeters (cm) and
millimeters (mm).
- Each
centimeter is divided into
10 millimeters.
- The
larger lines are centimeters; the
smaller lines between them are millimeters.
- To measure, look at the
arrow pointing to a specific mark on the ruler and determine the exact value.
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##
✔ Task 1: Measurement Reading
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A = ________ mm
Ruler shown:
- Numbers go from 39 to 43 cm.
- Arrow points to
just past 42 cm, specifically
at the 5th small line after 42.
#### Step-by-step:
- 42 cm = 420 mm
- Each small division = 1 mm
- Arrow is at
42 cm + 5 mm = 425 mm
✔ A = 425 mm
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B = ________ cm
Ruler shown:
- Numbers go from 1 to 10 cm, then 1 to 4 cm again (double-sided).
- Arrow points to
just before 6 cm, exactly at the
8th small line after 5 cm.
#### Step-by-step:
- 5 cm = 50 mm
- 8 mm after 5 cm → 5.8 cm
- Arrow is at
5.8 cm
✔ B = 5.8 cm
> 💡 Note: Since the answer is requested in
cm, we don’t convert to mm.
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C = ________ mm
Ruler shown:
- Numbers go from 93 to 99 cm.
- Arrow points to
just after 96 cm, specifically at the
3rd small line after 96.
#### Step-by-step:
- 96 cm = 960 mm
- Add 3 mm → 960 + 3 = 963 mm
✔ C = 963 mm
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✔ Final Answers:
-
A = 425 mm
-
B = 5.8 cm
-
C = 963 mm
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📌 Summary of How to Read a Metric Ruler:
1. Identify the
unit (cm or mm) required.
2. Find the
whole number (e.g., 42 cm).
3. Count the
small lines after that number (each = 1 mm).
4. Add the millimeter value to the whole number.
5. Convert units if needed (e.g., 1 cm = 10 mm).
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Let me know if you'd like this turned into a printable answer key!
Parent Tip: Review the logic above to help your child master the concept of scientific measurement worksheet.
