Grade 2 math worksheet - Measurement: convert between centimeters - Free Printable

To solve this worksheet, you need to do two things for each item:
1. Estimate: Look at the picture and guess how long it is in inches. Remember that a standard paperclip is about 1 inch long. You can use that as a clue!
2. Actual Length: Since I cannot measure your physical objects, I have provided the standard average lengths for these common items. If you are doing this at home with real objects, use a ruler to measure them yourself, as your specific items might be slightly different sizes.

Here is the step-by-step breakdown for the standard sizes of these items:

1. Paperclip
* Estimate: A standard paperclip is small. It looks like it would fit once into an inch. Let's guess 1 inch.
* Actual Length: Standard paperclips are usually exactly 1 inch (or sometimes slightly larger, like 1.5 inches for "jumbo" ones, but 1 is standard for school worksheets).

2. Pencil
* Estimate: A new pencil is much longer than a paperclip. It looks like it could be about 7 or 8 paperclips long. Let's guess 7 inches.
* Actual Length: A standard new wooden pencil is typically 7.5 inches long.

3. Comb
* Estimate: This comb looks wider than the paperclip but shorter than the pencil. It looks like maybe 4 or 5 paperclips. Let's guess 4 inches.
* Actual Length: Small pocket combs like this are usually around 4 to 5 inches. We will use 4.5 inches as a safe average.

4. Spoon
* Estimate: The spoon looks similar in length to the comb, maybe a tiny bit longer. Let's guess 5 inches.
* Actual Length: A standard dinner spoon is usually about 6 to 7 inches long. However, smaller teaspoons are about 5.5 to 6 inches. Let's go with 6 inches for a standard household spoon.

5. Eraser
* Estimate: The red eraser looks blocky. It looks like it could be 2 paperclips long. Let's guess 2 inches.
* Actual Length: Standard pink block erasers are usually 2 inches long.

6. Key
* Estimate: The key looks a bit longer than the eraser but shorter than the spoon. Maybe 3 paperclips? Let's guess 3 inches.
* Actual Length: A standard house key is typically about 2.5 to 3 inches long. Let's use 2.75 inches (or roughly 3 inches) as the actual length.

***

Final Answer:

Here are the estimated and actual lengths to fill in your table. *(Note: Your "Estimate" column can vary because it is just a guess, but the "Actual Length" column below uses standard averages).*

| Item | Estimate (Example Guess) | Actual Length (Standard Average) |
| :--- | :--- | :--- |
| Paperclip | 1 inch | 1 inch |
| Pencil | 7 inches | 7.5 inches |
| Comb | 4 inches | 4.5 inches |
| Spoon | 5 inches | 6 inches |
| Eraser | 2 inches | 2 inches |
| Key | 3 inches | 2.75 inches (or approx. 3 inches) |