Gram and Kilogram worksheet - Free Printable

Problem Description:

The task is to choose the suitable unit (gram or kilogram) for each object shown in the image. The goal is to determine whether each object is best measured in grams or kilograms based on its typical weight.

Solution Approach:

1. Understand the Units:
- Gram (g): Used for measuring lighter objects.
- Kilogram (kg): Used for measuring heavier objects. 1 kilogram = 1000 grams.

2. Analyze Each Object:
- Consider the typical weight of each object to decide whether it is better measured in grams or kilograms.

3. Decision Criteria:
- Objects that are very light (e.g., small insects, paper clips) are measured in grams.
- Objects that are heavier (e.g., animals, vehicles, large fruits) are measured in kilograms.

Step-by-Step Analysis:

#### Row 1:
1. Needle: Very light object → gram
2. Lion: Large animal → kilogram
3. Paperclip: Very light object → gram

#### Row 2:
4. Bed: Heavy object → kilogram
5. Butterfly: Very light insect → gram
6. Bus: Extremely heavy vehicle → kilogram

#### Row 3:
7. Box of Cereal: Light but not extremely light → gram
8. Watermelon: Heavy fruit → kilogram
9. Postcard: Very light object → gram

#### Row 4:
10. Cat: Medium-sized animal → kilogram
11. Lemon: Small fruit → gram
12. Bicycle: Moderately heavy object → kilogram

Final Answer:

\[
\begin{array}{|c|c|c|}
\hline
\text{Needle} & \text{Lion} & \text{Paperclip} \\
\hline
\text{gram} & \text{kilogram} & \text{gram} \\
\hline
\text{Bed} & \text{Butterfly} & \text{Bus} \\
\hline
\text{gram} & \text{kilogram} & \text{gram} \\
\hline
\text{Box of Cereal} & \text{Watermelon} & \text{Postcard} \\
\hline
\text{gram} & \text{kilogram} & \text{gram} \\
\hline
\text{Cat} & \text{Lemon} & \text{Bicycle} \\
\hline
\text{kilogram} & \text{gram} & \text{kilogram} \\
\hline
\end{array}
\]

Boxed Final Answer:

\[
\boxed{
\begin{array}{|c|c|c|}
\hline
\text{gram} & \text{kilogram} & \text{gram} \\
\hline
\text{kilogram} & \text{gram} & \text{kilogram} \\
\hline
\text{gram} & \text{kilogram} & \text{gram} \\
\hline
\text{kilogram} & \text{gram} & \text{kilogram} \\
\hline
\end{array}
}
\]