Q&A – Decomposition into Algorithms (Primary 4 – 4CT.07)

Q&A – Decomposition into Algorithms (Primary 4 – 4CT.07)

4th Grade

10 Qs

quiz-placeholder

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Q&A – Decomposition into Algorithms (Primary 4 – 4CT.07)

Q&A – Decomposition into Algorithms (Primary 4 – 4CT.07)

Assessment

Quiz

Computers

4th Grade

Hard

Created by

Shervon Yak

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Decomposition helps us design algorithms by dividing a big task into smaller parts.

True

False

Answer explanation

True. Decomposition is a fundamental technique in algorithm design that breaks down complex problems into manageable subproblems, making it easier to develop efficient solutions.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is the best example of decomposition?

Writing one huge step: “Do homework”

Breaking it down: “1. Open book, 2. Answer questions, 3. Check answers”

Writing “Homework Homework Homework”

Skipping homework altogether

Answer explanation

The best example of decomposition is breaking down a task into smaller steps, like '1. Open book, 2. Answer questions, 3. Check answers.' This approach clarifies the process, making it easier to complete the homework.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The first step when using decomposition to solve a problem is:

Break the problem into smaller parts

Implement the solution immediately

Test the final solution

Ignore the problem details

Answer explanation

The first step in decomposition is to break the problem into smaller parts. This allows for easier analysis and solution development, making it essential to understand the problem before implementing or testing any solutions.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Compare Algorithms Task: Bake a cake. • Algorithm A: Bake Cake • Algorithm B: Mix Ingredients Put in Oven Wait 30 minutes Serve Cake Which algorithm uses decomposition?

Algorithm A

Algorithm B

Answer explanation

Algorithm B uses decomposition by breaking down the task of baking a cake into smaller steps: mixing ingredients, putting in the oven, waiting, and serving. Algorithm A does not decompose the task.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Decomposition only works in computer programming, not in real life.

True

False

Answer explanation

False is correct because decomposition is a problem-solving technique applicable in both computer programming and real life. It involves breaking down complex problems into smaller, manageable parts, which is useful in various real-world scenarios.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which set of sub-tasks correctly decomposes “Brush your teeth”?

Run water, Put soap, Wash hands

Pick toothbrush, Put toothpaste, Brush teeth, Rinse mouth

Pick ball, Throw ball, Catch ball

Answer explanation

The correct decomposition of "Brush your teeth" involves specific steps: picking up the toothbrush, applying toothpaste, brushing, and rinsing. The other options do not relate to this task.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is missing in the decomposition?

A reactant. Example: Steps like “Add filling,” “Close bread slices,” “Cut sandwich.”

A product

A catalyst

A solvent

Answer explanation

In a decomposition reaction, a reactant is necessary to break down into products. If a reactant is missing, the reaction cannot occur, making it the correct choice. A product, catalyst, or solvent are not required for the reaction to start.

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