Decomposition CS Thinking Example 3

Follow the full solution, then compare it with the other examples linked below.

easy

Decompose the problem of creating a sandwich into at least 4 sub-tasks.

1
Step 1: Gather ingredients (bread, fillings, condiments).
2
Step 2: Prepare ingredients (slice cheese, wash lettuce, etc.). Assemble sandwich. Cut and serve.

Answer

Sub-tasks: gather ingredients, prepare ingredients, assemble sandwich, cut and serve.

Even everyday tasks benefit from decomposition. Breaking a task into steps makes it systematic and repeatable — the basis of algorithmic thinking.

About Decomposition

Breaking a complex problem into smaller, independently-solvable parts that combine into a complete solution.

You need to plan a school sports day. Decompose this problem into smaller sub-problems.

Decompose the task of building a simple calculator program.

Decompose building a class voting app into four modules, and identify one dependency between them.