Problem Description:
The image shows a ruler with a pencil placed on it. The task is to measure the length of the pencil using the ruler.
Solution:
1.
Identify the Starting Point:
- The pencil starts at the 0 cm mark on the ruler. This is the leftmost edge of the pencil.
2.
Identify the Ending Point:
- The pencil ends at the 9 cm mark on the ruler. This is the rightmost edge of the pencil.
3.
Calculate the Length:
- The length of the pencil is the difference between the ending point and the starting point.
- Starting point: 0 cm
- Ending point: 9 cm
- Length = Ending point - Starting point = 9 cm - 0 cm = 9 cm
Final Answer:
The length of the pencil is
\boxed{9 \text{ cm}}.
Explanation:
- The ruler is marked in centimeters, and the pencil spans from the 0 cm mark to the 9 cm mark.
- Since the pencil starts exactly at the 0 cm mark, the length is simply the value at the end of the pencil, which is 9 cm.
- No additional calculations are needed because the starting point is at 0 cm, making the measurement straightforward.
This method ensures accuracy in measuring the length of the pencil using the ruler.
Parent Tip: Review the logic above to help your child master the concept of measuring a pencil.
