Looking at the image, we are given a ruler (marked in centimeters) and a pencil placed along it. The task is to find the
length of the pencil.
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Step-by-step Solution:
1.
Identify the starting point of the pencil:
- The left end (eraser end) of the pencil aligns with the
1.0 cm mark on the ruler.
2.
Identify the ending point of the pencil:
- The tip of the pencil (the pointed end) aligns with the
6.0 cm mark on the ruler.
3.
Calculate the length:
- Length = End position – Start position
- Length = 6.0 cm – 1.0 cm =
5.0 cm
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✔ Final Answer:
The length of the pencil is 5.0 cm.
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Explanation:
When measuring an object with a ruler that doesn’t start at zero, you must subtract the starting measurement from the ending measurement to get the true length. In this case, since the pencil starts at 1.0 cm and ends at 6.0 cm, its actual length is the difference: 5.0 cm.
This method ensures accurate measurement regardless of where the object is placed on the ruler — as long as you note both endpoints correctly.
Parent Tip: Review the logic above to help your child master the concept of measuring a pencil.
