Page 82 - Code & Click - 4

10 Stepwise Thinking

Pre-Processing
Pre-Processing
• Problem Solving • Stepwise Thinking
• Sequence of Steps

• Decision Making and Repetition of Steps

In our everyday lives, we come across many situations. Some of these situations involve
problems that need to be solved.

PROBLEM SOLVING
Some of the problems can involve mathematical calculations, while others involve small
tasks that need to be done to solve the problem. The process of devising a solution to

a problem is called Problem Solving.
Problem Solving involves reasoning and logical thinking. Logical thinking is the ability to
understand a given problem and develop a series of steps to solve it. Reasoning is the

ability to analyse and choose the best solution among several possible solutions.
There are several steps involved in problem solving. These are:

1. Identify the problem: This step involves understanding the problem clearly and
collecting all required information about it.

2. Devising a solution: This step involves preparing
a series of steps to solve the problem. All possible Identify
the
solutions are pursued and written down. problem

3. Choose the best solution: This step involves
analysing the various solutions and visualising Implement Problem Devising a
the
the effects of implementing each solution. solution Solving solution
4. Implement the solution: This step involves

executing the chosen solution to solve the Choose
problem. The results of the execution are the best
solution
evaluated to make sure the desired objective is

achieved.
Example 1: Calculate the cost of 20 pens, given the cost price of one pen is ₹ 35.

Step 1: The problem involves calculating cost of pens. We have the number of pens –
20, and cost of each pen – ₹ 35.

80