Grade 3 Computing Worksheet: Units 3.2, 4.1, 4.2 & 4.3 (Interactive Quiz) Easy Version

Grade 3 Computing Targeted Quiz
Cambridge Primary Framework Review System

Welcome Students & Parents! Test your technology skills directly on your phone, tablet, or desktop with this instant-scoring review paper. This framework covers four core units:

• Unit 3.2: Secret Ciphers (Fun Codes & Hidden Notes)
• Unit 4.1: Hardware and Software Working Together
• Unit 4.2: The Automated Role of Robots Around Us
• Unit 4.3: Identifying Input and Output Systems

Q1. Unit 3.2 [Secret Ciphers] - Complete the words:

1. Making a message secret is called E n c __ __ p t →

2. Reading a locked secret message is D e c __ __ p t →

3. A secret code rule used to mix up letters is a C i p __ __ r →

Q2. Fill in the blanks using the easy words in the box below:

Software  |  Sensor  |  Hardware  |  Input  |  Robot  |  Output

1. The computer parts that you can actually touch with your hands are called .

2. Computer games and apps that tell the machine what to do are called .

3. An automatic machine that can move on its own and complete tasks is a .

4. To see or smell things around it, a smart machine uses a special .

5. Clicking a button or typing on a keyboard sends an into the computer.

6. A screen displaying pictures or speakers playing sound are examples of .

Q3. Choose the correct answer:

1. Move the letter 'A' forward by 1 space in the alphabet. What does it become?

A) A B) B C) C

2. Which of these is an example of computer HARDWARE?

A) A plastic computer mouse B) A mobile game app C) A video on YouTube

3. What helps a robot move its wheels or arms?

A) A computer mouse B) A motor C) A sheet of paper

4. Which device is used to send sound into a computer (INPUT)?

A) Microphone B) Speaker C) Printer

Q4. Unscramble the easy computing words:

1. O T O B R (A smart machine) →

2. E S N S O R (Helps a robot feel things) →

3. E C O D (Instructions for a computer) →

Q5. Write TRUE or FALSE:

1. A computer game can run even if the computer screen is completely broken.  → 

2. Robots use sensors to check the world around them.  → 

3. Headphones are an input device because they take in sounds.  → 

Q6. Match the item with the correct sentence (Write A, B, C, or D):

1. Computer Mouse

A. Plays sound out loud for your ears

2. Headphones

B. Input device used to point and click

3. Smart Toy Car

C. A locked note with a secret message

4. Cipher Note

D. Simple robot that drives around blocks

Click to View Answer Key Reference

Q1 Cipher Words: 1. encrypt, 2. decrypt, 3. cipher

Q2 Blanks: 1. hardware, 2. software, 3. robot, 4. sensor, 5. input, 6. output

Q3 MCQs: 1. B (Letter B), 2. A (A plastic computer mouse), 3. B (A motor), 4. A (Microphone)

Q4 Unscramble: 1. robot, 2. sensor, 3. code

Q5 True / False: 1. FALSE, 2. TRUE, 3. FALSE

Q6 Matching: 1 → B, 2 → A, 3 → D, 4 → C

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