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Did you know grade 3 is a time of discovery and learning? Hence, we have come up with these amazing 3rd-grade quiz questions and answers to help you out with the same. Math, Science, English, and Social Studies are part of this quiz. Also, the quiz involves comprehending addition and subtraction, discerning between past and present tense, identifying correct and incorrect sentences, computer peripherals, and living & non-living things. Allow this quiz to be your guide through the third-grade courses. Take up the quiz and answer all the questions correctly for a perfect score.

• 1.

### 100+100-100+100

• A.

200

• B.

0

• C.

100

• D.

250

A. 200
Explanation
The expression 100 + 100 - 100 + 100 can be simplified by combining like terms:
100 + 100 - 100 + 100 = 200 - 100 + 100
First, we can combine the addition:
200 - 100+100 = 200

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• 2.

### 530-100+400-100

• A.

130

• B.

730

• C.

630

• D.

340

B. 730
Explanation
The given expression involves addition and subtraction operations. Starting from left to right, we first subtract 100 from 530, resulting in 430. Then, we add 400 to 430, giving us 830. Finally, we subtract 100 from 830, which equals 730. Therefore, the correct answer is 730.

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• 3.

### Which of the following talks about the past or past tense?

• A.

I am playing football.

• B.

I played football.

• C.

I play football.

• D.

I will play football.

B. I played football.
Explanation
The correct answer is "I played football." This sentence uses the past tense verb "played" to indicate that the action of playing football occurred in the past. The other options either use present tense verbs ("I play football" and "I am playing football") or have incorrect sentence structure ("I playing football").

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• 4.

### Which of the following talks about the present or the present tense?

• A.

I will go to school.

• B.

I went to school.

• C.

I am going to school.

• D.

All of the above

C. I am going to school.
Explanation
The correct answer is "I am going to school" because it uses the present tense "am going" to describe an action that is happening in the present. The other options use the future tense "will go" and the past tense "went" to describe actions that either happened in the past or will happen in the future.

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• 5.

### Which sentence is correct?

• A.

I is sitting on my chair.

• B.

I was sitting on my chair.

• C.

I were sitting on my chair.

• D.

I was sit on my chair.

B. I was sitting on my chair.
Explanation
The correct answer is "I was sitting on my chair." This sentence is correct because it uses the past tense of the verb "to be" (was) and the present participle form of the verb "to sit" (sitting), which is appropriate for describing an action that happened in the past.

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• 6.

### What can a living thing do?

• A.

It can move, or it is alive.

• B.

It can't move or eat.

• C.

I don't know..

• D.

All of the above

A. It can move, or it is alive.
Explanation
The correct answer is "It can move, or it is alive." This answer is correct because one of the defining characteristics of a living thing is its ability to move. Movement is a key attribute of life as it allows organisms to respond to their environment, find food, escape from predators, and carry out essential life processes. Therefore, if something can move, it is considered alive.

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• 7.

### What is the process by which plants make their own food using sunlight?

• A.

Breathing

• B.

Photosynthesis

• C.

Hibernation

• D.

Migration

B. Photosynthesis
Explanation
Photosynthesis: This is the correct answer. Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce glucose (sugar) and oxygen. It is how plants make their own food.

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• 8.

### We can listen to sounds and music from the speakers.

• A.

True

• B.

False

A. True
Explanation
The statement implies that the speakers are capable of producing sounds and music, which can be heard by us. Therefore, the answer "True" indicates that it is possible to listen to sounds and music from the speakers.

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• 9.

### Where do you type in a computer?

• A.

Keyboard

• B.

CPU

• C.

Mouse

• D.

Monitor

A. Keyboard
Explanation
The keyboard is where you type in a computer. It is an input device that allows the user to input text and commands into the computer system. The other options, such as CPU, mouse, and monitor, are not used for typing. The CPU is the central processing unit that processes data, the mouse is used for pointing and clicking, and the monitor is the display screen. Therefore, the correct answer is keyboard.

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• 10.

### Which device allows you to see images and pictures on the computer?

• A.

Monitor

• B.

CPU

• C.

Keyboard

• D.

Mouse

A. Monitor
Explanation
A monitor is a device that allows you to see images and pictures on the computer. It is an output device that displays the visual output from the computer's graphics card. The monitor usually consists of a screen, which can be either LCD or LED, and it is connected to the computer via a cable. The images and pictures are displayed on the monitor's screen, allowing the user to visually interact with the computer and view the content being displayed.

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• 11.

### What do living things need to survive?

• A.

Sunlight

• B.

Food

• C.

Water

• D.

Plastic

A. Sunlight
B. Food
C. Water
Explanation
Living things need sunlight, food, and water to survive. Sunlight is necessary for photosynthesis in plants, which provides them with energy. Food provides organisms with the necessary nutrients and energy to carry out their life processes. Water is essential for various metabolic reactions, maintaining temperature, and transporting nutrients and waste products. Plastic is not a requirement for survival and does not provide any essential nutrients or energy for living things.

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• 12.

### 200+200-50

• A.

350

• B.

300

• C.

0

• D.

250

A. 350
Explanation
The given expression is 200+200-50. First, we add 200 and 200, which gives us 400. Then, we subtract 50 from 400, resulting in 350. Therefore, the correct answer is 350.

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• 13.

### The Sun is a star.

• A.

True

• B.

False

A. True
Explanation
The statement is true. The Sun is a star, and it is the closest star to Earth. It provides us with light and heat, making life on Earth possible.

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• 14.

### Motherboard is a software.

• A.

True

• B.

False

B. False
Explanation
The given statement is incorrect. A motherboard is not a software, but rather a physical component of a computer system. It is a printed circuit board that allows communication between various hardware components such as the processor, memory, and storage devices. Software, on the other hand, refers to the programs and instructions that run on the computer system.

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• 15.

### How many planets are there in our solar system?

• A.

7

• B.

8

• C.

9

• D.

10

B. 8
Explanation
There are 8 planets in our solar system. This includes Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was previously considered the ninth planet but was reclassified as a dwarf planet in 2006.

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• Current Version
• Apr 08, 2024
Quiz Edited by
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• Aug 24, 2011
Quiz Created by
Pidashant

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