How Do You Measure the Length of Each Object With Your Centimetre Ruler?

To measure the length of an object with a centimeter ruler, you align the start of the ruler with one end of the object and read the measurement at the other end, focusing on the largest whole centimeter value.

Measuring length accurately is a fundamental skill using tools like a centimeter ruler. A centimeter ruler helps determine how long an object is by providing marked units of measurement.

## Step-by-Step Guide to Measuring Length

Based on the provided reference, here is the method to measure an object's length using the centimeter side of your ruler:

1.  **Position the Ruler:** Place the side of your ruler marked with centimeters along the edge of the object you wish to measure.
2.  **Align the Start:** Ensure that the very beginning or end of the ruler (typically the zero mark, or the physical end if it represents zero) is perfectly even with the **left end** of the object.
3.  **Locate the End:** Identify where the **right end** of the object falls on the ruler.
4.  **Read the Measurement:** To determine the length, look at the point on the ruler aligned with the right end of the object. According to the reference, you should then **find the largest centimeter value** that is located to the **left** of this right end point.

This method focuses on identifying the whole number of centimeters that the object spans.

## Practical Example

Let's say you are measuring a pencil.

*   You place the ruler alongside the pencil.
*   You align the ruler's zero mark (or end) with the left tip of the pencil.
*   The right end (eraser) falls somewhere past the 15 cm mark, but before the 16 cm mark.
*   Following the method, you **find the largest centimeter value to the left** of the eraser end, which is **15 cm**.
*   Therefore, the length according to this method is 15 cm (representing the largest whole centimeter the object covers).

## Measurement Table Example

Here is a simple table illustrating this concept for a few objects:

| Object   | Aligned Ruler End | Object's Other End Falls | Largest cm Value to the Left | Measured Length (cm) |
| :------- | :---------------- | :----------------------- | :--------------------------- | :------------------- |
| Eraser   | 0 cm mark         | Just past 4 cm           | 4 cm                         | 4                    |
| Crayon   | 0 cm mark         | Just past 7 cm           | 7 cm                         | 7                    |
| Small Box| 0 cm mark         | Exactly on 10 cm         | 10 cm                        | 10                   |

By following these steps, you can consistently measure the length of various objects using your centimeter ruler.