Class 3 Computer Science Chapter 1 Knowing a Computer - Free Printable

Let's solve the problems step by step.

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C. Find out the output of the given input:

We are given some inputs and need to determine their corresponding outputs.

1. 35 + 5
→ $ 35 + 5 = 40 $
✔ Output: 40

2. 28 – 8
→ $ 28 - 8 = 20 $
✔ Output: 20

3. 8 × 5
→ $ 8 \times 5 = 40 $
✔ Output: 40

4. Is 18 > 70?
→ This is a comparison. Is 18 greater than 70?
→ No, because 18 < 70
✔ Output: No (or False, depending on expected format)

5. Spelling of my name
→ This is not a mathematical operation but a request for spelling.
→ Since "my name" is subjective, the output would be the actual spelling of the person's name.
→ For example, if the student’s name is "Rahul", then the output is Rahul.
✔ Output: [Student's Name] — *This should be filled in by the student.*

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✔ Final Answers for Part C:

| INPUT | OUTPUT |
|----------------------|----------------|
| 35 + 5 | 40 |
| 28 – 8 | 20 |
| 8 × 5 | 40 |
| Is 18 > 70 ? | No / False |
| Spelling of my name | [Your Name] |

> 💡 Note: The last one depends on the student’s actual name.

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D. Identify the following as input, processing, and output devices:

We have three images:

1. Computer Tower (CPU)
→ This contains the Central Processing Unit (CPU) and other components that process data.
✔ Processing Device

2. Keyboard
→ Used to enter data into the computer.
✔ Input Device

3. Monitor
→ Displays information from the computer.
✔ Output Device

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✔ Final Answers for Part D:

- Computer Tower (CPU): Processing
- Keyboard: Input
- Monitor: Output

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🟩 Summary:

#### C. Output of Inputs:
1. 35 + 5 → 40
2. 28 – 8 → 20
3. 8 × 5 → 40
4. Is 18 > 70? → No
5. Spelling of my name → [Your Name]

#### D. Device Identification:
- Computer Tower → Processing
- Keyboard → Input
- Monitor → Output

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✔ These answers are suitable for Class 3 Computer Science, focusing on basic concepts of input, processing, and output in computers.