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4. Implement the solution: This step involves executing the chosen solution to
solve the problem. The results of the execution are 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.
Step 2: We need to use multiplication to calculate the total cost

Step 3: We carry out the calculation: 20 × 35 = 700

Step 4: The total cost of 20 pens is ₹ 700.

STEPWISE THINKING

The process of developing the steps to solve a problem is called Stepwise Thinking.
The solution of a problem may involve more than one step. These steps need to be

carried out to solve the problem. Some steps might be composed of smaller steps in
order to understand the solution completely.

Step 1

Step 2

Step 3

Example 2: Write a stepwise procedure to bake a cake.

Step 1: Collect all the ingredients – flour, flavouring agent, sugar, baking powder,
butter, milk.

Step 2: Prepare the batter for the cake in a bowl.
Step 3: Pour the batter in a mould.

Step 4: Bake the cake in an oven.

Step 5: After the cake is baked, decorate it.
Some steps can be divided into smaller, simpler steps.

For example, Step 2 – Prepare the batter in a bowl, can be further split into:
Step 2(a): Take a bowl.

Step 2(b): Put all the ingredients in the bowl.
Step 2(c): Use a whisk to mix all ingredients together to form a smooth mixture.

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